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Handleless Eccentric Cam Ascenders

This section includes mechanical ascenders consisting of a shell or frame and an eccentric cam assembly attached to the shell/frame at a single pivot point. The shell/frame is open on one side to allow admittance of the standing rope. No sling attachment points are provided on the cam. No handle is provided.

These ascenders are generally smaller and lighter than the handled eccentric cam ascenders; conversely, they are more difficult to manipulate, particularly with gloved hands. I prefer ascending without gloves on except in cold conditions.

In the ID column, I use a red background for hand ascenders, green for chest ascenders, and blue for emergency ascenders.

Gallery

Image ID Device Description Acquired Weight Height Width Thickness Std. volume Channel Diameter Cam Angle Tooth Pattern
Advanced Base Camp, Version A 225
2137
Advanced Base Camp, Version A LH chest, stamped frame, oval top hole, large oval bottom hole, stamped cam stop, web & bar cam /w cutouts, sloping teeth, safety lever on cam
  • On Rope 1, 2007
  • Bob Thrun Collection, 2017
141 103 75 37 285 15.3 26° (2.4)(1H1.2)^3(1.2.2)
Advanced Base Camp, Version B 244
2138
Advanced Base Camp, Version B LH chest, stamped frame, oval top hole, large oval bottom hole, stamped cam stop, web & bar cam /w cutouts, sloping teeth, safety lever on cam
  • On Rope 1, 2008
  • Bob Thrun Collection, 2017
143 102 75 38 291 15.3 26° (3.2.4)(1H1.2)^3(1.2.2)
Advanced Base Camp, Version C 278
2138
Advanced Base Camp, Version C LH chest, stamped frame, oval top hole, large oval bottom hole, stamped cam stop, web & bar cam /w cutouts, sloping teeth, safety lever on cam
  • On Rope 1, 2009
  • Bob Thrun Collection, 2017
143 101 74 38 291 15.3 26° (3.2.4)(1H1.2)^3(1.2.2)
Anthron AB-20 2079 Anthron AB-20 RH, stamped frame, oval & round top holes, slotted & round lower holes, barred cam /w side mud grooves, sloping teeth, safety /w pin on cam Bob Thrun Collection, 2017 148 105 79 34 279 15.0 24° (3.2)^2(1.2)^2(B)
Anthron AC-30,  Version A 294 Anthron AC-30, Version A LH chest, stamped frame, round top hole, oval bottom hole, platedcast web cam /w cutout, sloping teeth, safety /w pin on cam Bob Thrun Collection, 2017 144 119 79 33 315 15.1 27° (3.2)^2(1.2)^2(B)
Anthron AC-30,  Version B 294 Anthron AC-30, Version B LH chest, stamped frame, round top hole, oval bottom hole, cast web cam /w cutout, sloping teeth, safety /w pin on cam Bob Thrun Collection, 2017 144 119 79 33 315 14.3 27° (3.2)^2(1.2)^2(B)
Anthron AC-30,  Version C 294 Anthron AC-30, Version C LH chest, stamped frame, round top hole, oval bottom hole, cast web cam /w cutout, sloping teeth, safety /w pin on cam Rescue Technology, 2009 140 119 80 33 291 15.0 27° (3.2)^2(1.2)^2(B)
Апыурс 2143 Апыурс LH chest, stamped frame, oval top hole, large oval bottom hole, pin cam stop, web & bar cam /w cutouts, sloping teeth, safety lever on cam Bob Thrun Collection, 2017 142 115 78 40 361 15.3 28° (2.2)(2S2.1S1)^2(1S1)^3(1.2)
Beal Hold Up 2053 Beal Hold Up LH chest, stamped frame, round top hole /w slot, rear hole, cast cam /w mud groove, sloping teeth, safety /w pin on cam Expé-Spelemat, 2016 156 82 72 59 347 15.5 33° (3.4)(1S1.2S2)^2(3.2.1)(BB)
Camp Solo, Version A 150 Camp Solo, Version A RH, stamped frame, oval top & round bottom holes, solid cam /w cutouts, straight teeth, button safety K&R Adventure Gear, 2001 157 107 79 31 265 13.5 31° (2)(1S1)^7(1)
Camp Solo, Version B 2125 Camp Solo, Version B RH, stamped frame, oval top & round bottom holes, solid cam /w cutouts, straight teeth, button safety Bob Thrun Collection, 2017 157 116 75 31 267 13.2 28° (1)(2.3)^4(2.1)
Camp Solo 2 1988 Camp Solo 2 RH, stamped frame, round holes, cast cam, sloping teeth, safety on cam Expé-Spelemat, 2014 92 93 55 24 123 14.2 28° (2)(1S1)^7(1)
Camp Turbo Chest 1987
2086
Camp Turbo Chest LH chest, stamped frame /w 2 Al rollers, subtriangular top hole, oval bottom hole, cast cam, sloping teeth, safety on cam
  • Expé-Spelemat, 2014
  • Bob Thrun Collection, 2017
110 92 57 38 199 14.5 28° (2)(1S1)^7(1)
CIC 1974 CIC LH, chest, stamped frame, oval top & bottom holes, web cam, sloping teeth, safety lever on cam Gold Bucket, 2014 158 117 79 35 319 18.0 27° (3)^3(1S1)^5(3)^2
Climb Tech 1938
1971
2144
Climb Tech LH chest, stamped frame, oval top & bottom holes, cast web cam /w cutout, sloping teeth, safety on cam
  • Climb Tech, 2012
  • OmniProGear, 2014
  • Bob Thrun Collection, 2017
158 118 79 33 302 15.8 27° (3)^3(1S1)^5(3)^2
Climbing Technology Evo 2003
2009
Climbing Technology Evo LH chest, stamped frame, oval top hole, large oval bottom hole, stamped cam stop, web cam, sloping teeth, safety lever cam
  • Knot & Rope Supply / Amazon.com, 2015
  • Expé-Spelemat, 2015
145 107 77 37 307 15.2 31° (3.2.4)(1H1.2)^3(1.2.2)
Climbing Technology Roll N Lock 1962
1989
Climbing Technology Roll N Lock Ambidextrous, stamped Al shell, cast SS & stamped Al cam, pulley, hold-open catch, carabiner hole Outdoor Supply LLC, 2013 81 34 69 32 75 17.3 17° (Z)^5
Climbing Technology Simple 2002
2013
Climbing Technology Simple RH, stamped frame, pear top holes, round bottom hole, stamped cam stop, web cam, sloping teeth, safety lever cam
  • Knot & Rope Supply / Amazon.com, 2015
  • Expé-Spelemat, 2015
154 110 75 28 230 15.9 31° (3.2.4)(1H1.2)^3(1.2.2)
Clog, Version A 1503 Clog, Version A LH, stamped frame, round bottom hole, milled cam /w pin, 10 Z teeth Paul Gough, 2009 164 102 84 29 250 14.8 24° (Z)^10, circular cam
Clog, Version B 2097 Clog, Version B RH, stamped frame, round bottom hole, milled cam /w pin, 12 Z teeth Bob Thrun Collection, 2017 165 103 82 30 253 14.5 mm 27 (Z)^12, circular cam
Clog, Version C 1504 Clog, Version C RH, stamped frame, round bottom hole, milled cam /w pin, 11 Z teeth Paul Gough, 2009 155 102 80 27 221 14.9 30° (Z)^11, circular cam
Clog, Version D 2096 Clog, Version D LH, stamped frame, round bottom hole, milled cam /w pin, 11 Z teeth Bob Thrun Collection, 2017 165 103 85 29 255 14.8 31° (Z)^11, circular cam
Clog, Version E 1
212
213
1585
2100
Clog, Version E LH & RH, stamped frame, round top & bottom holes, milled cam /w pin, 13 Z teeth
  • Eiselin Sport, 1982
  • (2) Craig Kubanoff, 2007
  • Jon Marshall, 2012
  • Bob Thrun Collection, 2017
165 103 82 35 296 14.8 26° (Z)^13, circular cam
Clog, Version F 2304
2321
Clog, Version F LH & RH, stamped frame, round top & bottom holes, milled cam /w pin, 16 Z teeth
  • Bill Liebman, 2017
  • John Replinger, 2017
165 104 82 35 300 14.6 17° (Z)^16, circular cam
Clog, Version G 1524
2123
Clog, Version G LH & RH, stamped frame, round top & bottom holes, milled cam /w hole 14 Z teeth
  • Steve Sirrs, 2009
  • Bob Thrun Collection, 2017
162 103 84 25 219 14.4 15° (Z)^14, circular cam
Clog, Version H 2
1586
Clog, Version H LH & RH, stamped frame, round top & bottom holes, milled cam /w hole 13 Z teeth
  • Eiselin Sport, 1982
  • Jon Marshall, 2012
153 103 82 25 211 14.4 21° (Z)^13, circular cam
Clog, Version I 197
1554
1909
Clog, Version I RH, stamped frame, round top & bottom holes, web cam /w cutout, straight teeth
  • Brian Trevelyan, 2005
  • Vanessa Field, 2010
  • Jean Slade, 2012
152 104 82 25 209 15 22° (4.5)^4(4.3)^4
Clog, Version J 2122 Clog, Version J LH & RH, stamped frame, round top & bottom holes, web cam /w cutout, straight teeth Bob Thrun Collection, 2017 149 104 98 24 240 14.8 22° (4.5)^4(4.3)^4 
Clog, Version K 3
1963
2004
2124
Clog, Version K LH & RH, stamped frame, round top & bottom hole, web cam /w cutout, straight teeth
  • Ligonier Mountain Outfitters, 1978
  • John Creelman, 2013
  • G.I. Joe Army Stores, 2015
  • Bob Thrun Collection, 2017
148 104 98 25 255 15 22° (4.5)^4(4.3)^4
Clog, Version L 2121 Clog, Version L LH & RH, stamped frame, round top & bottom holes, web cam /w cutout, straight teeth Bob Thrun Collection, 2017 158 105 97 26 260 16.4 mm 22 (4.5)^4(4.3)^4 
Clog, Version M 1512
1904
1964
2005
Clog, Version M LH & RH, stamped frame, round top & bottom holes, web cam /w cutout, cam stopstraight teeth
  • Kieron Kent, 2009
  • Brittany Jacobs, 2012
  • John Creelman, 2013
  • G.I. Joe Army Stores, 2015
157 104 98 26 262 16 22° (4.5)^4(4.3)^4
Clog, Version N 1584 Clog, Version N RH, stamped frame, round top & 2 bottom holes, web cam /w cutout, straight teeth Jon Marshall, 2012 161 105 99 25 253 16.3 22° (4.5)^4(4.3)^4 
Clog, Version O 1557
2006
Clog, Version O LH, stamped frame, round top & 2 bottom holes, web cam /w cutout, straight teeth
  • Simon Green, 2011
  • G.I. Joe Army Stores, 2015
160 104 97 25 258 16.3 22° (4.5)^4(4.3)^4 
Clog, Version P 233 Clog, Version P LH, stamped frame, round top & 2 bottom holes, web cam /w cutout, straight teeth, cam stop Erica Harley, 2007 156 104 98 26 262 15 22° (4.5)^4(4.3)^4
Clog, Version Q 196 Clog, Version Q RH, stamped frame, round top & 2 bottom holes, web cam /w cutout, straight teeth Jim Halstead, 2005 155 104 99 32 325 15 22° (4.5)^4(4.3)^4
CMI Shorti, Version A 2117 CMI Shorti, Version A RH, extruded frame,triangular top & bottom holes, open cam, straight teeth, finger safety on cam top, long spring Bob Thrun Collection, 2017 160 116 76 25 220 14.3 28° (2)(5.4)^4(3.4)^2(3.2)^2
CMI Shorti, Version B 4 & 5 CMI Shorti, Version B LH & RH, extruded frame, triangular top & bottom holes, open cam, straight teeth, finger safety on cam top Speleoshoppe, 1979 175 116 76 25 220 14.3 28° (2)(5.4)^4(3.4)^2(3.2)^2
CMI Shorti /w pin kit 240
2116
CMI Shorti, Version B
/w Version A Optional Safety Pin Kit installed
LH & RH, extruded frame, triangular top & bottom holes, open cam, straight teeth, finger safety on cam top, Version A Optional Safety Pin Kit installed
  • Sheryle Bauer, 2005
  • Bob Thrun Collection, 2017
  • Kit: Pathfinder Sports ca. 1980
175 116 76 25 220 14.3 28° (2)(5.4)^4(3.4)^2(3.2)^2
CMI Shorti II, Version A 222 CMI Shorti II, Version A LH & RH, extruded frame, triangular top & bottom holes, barred cam, straight teeth, finger safety on cam top Charles Knowles, 2007 168 116 76 28 244 14.4 31° (2)(5.4)^4(3.4)^2(3.2)^2
CMI Shorti II, Version B 2095 CMI Shorti II, Version B LH & RH, extruded frame, triangular top & bottom holes, plated barred cam, straight teeth, finger safety on camtop Bob Thrun Collection, 2017 176 116 76 27 240 14 29° (1.4.3.3.4)(3.2)^6
CMI Shorti II /w pin kit " CMI Shorti II, Version B
/w Version A Optional Safety Pin Kit installed
LH & RH, extruded frame, triangular top & bottom holes, plated barred cam, straight teeth, finger safety on cam top, Version A Optional Safety Pin Kit installed
  • Bob Thrun Collection, 2017
  • Kit: Bob & Bob, 2017
189 116 76 37 328 14 29° (1.4.3.3.4)(3.2)^6
CMI Shorti III 6 & 7 CMI Shorti III LH & RH, extruded frame, triangular top & bottom holes, barred cam, sloping teeth, finger safety on cam top Pathfinder Sports, 1981 194 120 79 28 265 17.4 29° (1)(2.3)^2(4.3)(2.3)^5(2)
CMI Shorti III /w pin kit 7 CMI Shorti III
/w Version A Optional Safety Pin Kit installed
LH & RH, extruded frame, triangular top & bottom holes, barred cam, sloping teeth, finger safety on cam top, Version A Optional Safety Pin Kit installed
  • Pathfinder Sports, 1981
  • Kit: Pathfinder Sports ca. 1980
205 120 79 37 351 17.4 29° (1)(2.3)^2(4.3)(2.3)^5(2)
CMI Shorti IV 8,
1508
CMI Shorti IV LH & RH, extruded frame, triangular top & bottom holes, barred cam, straight teeth, finger safety on cam top
  • Inner Mountain Outfitters, 1989
  • James Lucchesi, 2009
  • Bob Thrun Collection, 2017
196 121 78 29 274 17.2 27° (5.4)^2(3.4)^3(3.2)
CMI Shorti IV /w pin kit 2072 CMI Shorti IV
/w Version B Optional Safety Pin Kit installed
LH & RH, extruded frame, triangular top & bottom holes, barred cam, straight teeth, finger safety on cam top, Version B Optional Safety Pin Kit installed
  • Bob Thrun Collection, 2017
  • Kit: Bob & Bob, 2017
170 116 76 37 327 17.2 27° (5.4)^2(3.4)^3(3.2)
Edelweiss TB16 2312 Edelweiss TB16 LH chest, stamped frame, round top hole /w slot, rear hole, cast cam /w mud groove, sloping teeth, safety /w pin on cam Buffalo Gap Outfitters, 2017 157 78 72 36 203 15.5 33° (3.4)(1S1.2S2)^2(3.2.1)(BB)
Emilsa 203 Emilsa LH chest, stamped frame, unfinished, oval top hole, steel-lined oval bottom hole, cast cam, sloping teeth, shell safety /w hook Luc Bourguignon, 2005 174 126 87 38 413 15.2 22° (2.3)(4.3)^5(2.3)
Epic Peak 2329 Epic Peak LH, chest, stamped frame, oval top & bottom holes, open cam, sloping teeth, safety lever on cam Epic Peak Gear, 2017 159 118 81 35 335 16.5 28° (3)^3(1S1)^5(3)^2
GM Climbing 2330 GM Climbing LH, chest, stamped frame, oval top & bottom holes, open cam, sloping teeth, safety lever on cam Emma Xiao, 2017 159 118 81 35 335 16.5 28° (3)^3(1S1)^5(3)^2
Greenwald Hand Cam 227 Greenwald Hand Cam Steel shell, cut cam with needle bearing, pin axle, rubber cam closer, noncommercial. Bill Greenwald, 2007 335 73 69 32 160 13.0 27° Z^4
heightec-PMI Compact D41A, Version A 254
2126
heightec-PMI Compact D41A, Version A RH, stamped Al frame, oval top holes, 2 round lower holes, cam stop, web cam, straight teeth, safety /w pin on cam
  • On Rope 1, 2008
  • FRHAM Safety Products, Inc, 2013
  • Bob Thrun Collection, 2017
164 113 72 27 218 15.8 26° (1.2^3)^2(1.2)^2(B)
heightec-PMI Compact D41A, Version B 1528
1966
2127
heightec-PMI Compact D41A, Version B RH, stamped Al frame, oval top holes, 2 round lower holes, cam stop, web cam, straight teeth, plastic safety on cam
  • On Rope 1, 2009
  • Bob Thrun Collection, 2017
160 112 73 26 218 13.6 26° (1.2^3)^2(1.2)^2(B)
heightec-PMI Rescue Compact D41A/ D44 Rope Grab/ D44A 255
2128
heightec-PMI Rescue Compact D41A/ D44 Rope Grab/ D44A RH, stamped SS frame, 2 round lower holes, cam stop, web cam, straight teeth, safety /w pin on cam
  • On Rope 1, 2008
  • Bob Thrun Collection, 2017
300 113 80 25 229 15.4 26° (1.2^3)^2(1.2)^2(B)
heightec-PMI Twist D42A, Version A 268
2140
heightec-PMI Twist D42A, Version A LH chest, stamped frame, oval top hole, distorted bottom hole, web cam, straight teeth, safety /w pin on cam
  • On Rope 1, 2009
  • Bob Thrun Collection, 2017
142 107 71 31 229 15.8 25° (1.2^3)^2(1.2)^2(B)
heightec-PMI Twist D42A, Version B 1502
2141
heightec-PMI Twist D42A, Version B LH chest, stamped frame, oval top hole, distorted bottom hole, web cam, straight teeth, Plastic safety
  • On Rope 1, 2009
  • Bob Thrun Collection, 2017
145 103 73 38 229 16.1 25° (1.2^3)^2(1.2)^2(B)
International Safety Components RP229 2313 International Safety Components RP229 LH chest, stamped frame, oval holes, open cam, sloping teeth, metal safety on cam F R Jones and Son, 2017 163 117 77 40 354 14.5 28° (3)^3(2)(1S1)^4(3)^2
Kong-Bonaiti Cam-Clean, Version A 9
2145
Kong-Bonaiti Cam-Clean, Version A LH chest, stamped frame, oval top hole, large oval bottom hole,web cam /w cutout, sloping teeth, safety /w pin on cam
  • Bob & Bob, 1987
  • Brent Fader, 2011
  • Bob Thrun Collection, 2017
155 117 77 40 360 15.8 34° (3.4)(H.3)^3(H.2.1)
Kong-Bonaiti Cam-Clean, Version B 2146 Kong-Bonaiti Cam-Clean, Version B LH chest, stamped frame, oval top hole, large oval bottom hole, web cam /w cutout, sloping teeth, safety /w pin on cam Bob Thrun Collection, 2017 154 115 80 40 362 15.7 30° (3)(4.H)^2(3.H)^2(2.2.1)
Kong-Bonaiti Modular, Version A 22
2203
Kong-Bonaiti Modular, Version A LH & RH, modular, stamped frame, round & D top holes, round bottom hole, stamped cam stop,web cam /w cutout, sloping teeth, safety /w pin on cam
  • Inner Mountain Outfitters, 1992
  • Bob Thrun Collection, 2017
148 110 79 37 322 15.5 30° (3)(4.H)^2(3.H)^2(2.2.1)
Kong-Bonaiti Modular, Version B 1558 Kong-Bonaiti Modular, Version B LH & RH, modular, stamped frame, round & D top holes, round bottom hole, stamped cam stop,web cam /w cutout, sloping teeth, safety /w pin on cam Brent Fader, 2011 155 114 79 27 240 15.4 30° (3)(4.H)^2(3.H)^2(2.2.1)
Kong-Bonaiti Modular, Version C 2118 Kong-Bonaiti Modular, Version C RH, stamped frame, round & D top holes, round bottom hole, stamped cam stop,web cam /w cutout, sloping teeth, safety /w pin on cam Bob Thrun Collection, 2017 158 113 79 28 251 15.7 30° (3)(4.H)^2(3.H)^2(2.2.1)
Kong Cam-Clean 2018 Kong Cam-Clean LH chest, stamped frame, oval top hole, large oval bottom hole, web cam /w cutout, sloping teeth, safety on cam Outdoor Shopping LLC, 2015 152 115 76 40 354 13.7 30° (3)(4.H)^2(3.H)^2(3.2.2)
Kong Duck 288
1517
2131
Kong Duck LH, Al case, steel cam, swinging front plate, Z teeth, carabiner hole
  • Expé-Spelemat, 2009
  • On Rope 1
  • Bob Thrun Collection, 2017
68 66 31 30 60 15.1 20° (Z)^10
Kong Futura Body 1537
2152
Kong Futura Body LH, extruded & bent Al shell, open cam /w safety on cam
  • Expé-Spelemat, 2010
  • Bob Thrun Collection, 2017
82 82 48 35 139 13.9 32° (4)(5.2H2)^2(4.2)
Krok Chest Strap Ascender 1582 Krok Chest Strap Ascender LH, stamped & painted Al shell, cast SS cam /w cam safety Gear4Rocks, 2012 147 114 69 31 245 15.2 32° (3.2)(2.2.H)^3(2.2.3.2)
Krok Mini Ascender, Version A 1594 Krok Mini Ascender, Version A Ambidextrous, stamped Al shell, toothed cam, carabiner hole Gear4Rocks, 2012 77 35 62 28 61 13.5 21° (2.H.2)^3(2.3.2)
Krok Mini Ascender, Version B 1597 Krok Mini Ascender, Version B Ambidextrous, stamped Al shell, toothed cam, carabiner hole Krok (Alex Dniprovsky & Alex Kostromitinov), 2012 79 33 63 28 59 13.5 21° (2.H.2)^3(2.3.2)
Krok Multipurpose Ascender 1583 Krok Multipurpose Ascender LH, stamped & painted Al shell, cast SS cam /w cam safety Gear4Rocks, 2012 142 102 76 30 231 15.5 32° (3.2)(2.2.H)^3(2.2.3.2)
Lucky AB-20 Bloquer 166 Lucky AB-20 Bloquer RH, stamped frame, oval & round top holes, slotted & round lower holes, barred cam /w side mud grooves, sloping teeth, safety /w pin on cam Barrabes.com, 2003 148 105 77 31 245 15 24° (3.2)^2(1.2)^2(B)
Magideal, Version A 2335 Magideal, Version A LH chest, stamped frame, subtriangular top hole, oval bottom hole, cast cam, sloping teeth, safety on cam Suntek, 2017 97 102 60 32 196 15.0 33° (3.4.H.4.2.3.H.2.2.1)(1H1)(4.3)
Magideal, Version B</B> 2333 Magideal, Version B LH chest, stamped frame /w 2 Al rollers, subtriangular top hole, oval bottom hole, cast cam, sloping teeth, safety on cam Suntek, 2017 107 90 58 38 198 15.0 33° (3.4.H.4.2.3.H.2.2.1)(1H1)(4.3)
NTR, Version A 2015 NTR, Version A LH, chest, stamped frame, oval top & bottom holes, web cam, sloping teeth, safety lever on cam Linko Chen 训连 陈, 2015 160 117 82 35 333 14.9 27° (3)^3(1S1)^5(3)^2
NTR, Version B 2085 NTR, Version B RH, chest, stamped frame, subtriangular top & D-shaped bottom hole, web cam, sloping teeth, safety lever on cam Bob Thrun Collection, 2017 134 110 74 34 278 14.9 27° (2.4)(1S1.2S2)^2(1S1)(2.3)
Petzl Basic, Version A 2130 Petzl Basic, Version A RH, stamped frame, unfinished, round top & round bottom holes, cast cam /w cutout, Z teeth, safety on cam Bob Thrun Collection, 2017 116 101 77 23 177 14.9 19° 14 "z" teeth
Petzl Basic, Version B 202
1539
1540
2129
Petzl Basic, Version B LH & RH, stamped frame, unfinished, round top & round bottom holes, cast cam /w cutout, Z teeth, safety on cam
  • Luc Bourguignon, 2005
  • Julian Turner, 2010
  • Julian Turner, 2010
  • Bob Thrun Collection, 2017
113 100 76 24 184 14.9 22° 12 "z" teeth,
spru between 5 & 6
Petzl Basic, Version C 12 Petzl Basic, Version C RH, stamped frame, round top & round bottom holes, cast cam /w cutout, Z teeth, safety on cam Speleoshoppe, 1980 122 100 76 24 182 15.5 22° 12 "z" teeth,
sprue between 5 & 6
Petzl Basic, Version D 13 Petzl Basic, Version D RH, stamped frame, round top & round bottom holes, cast cam /w cutout, Z teeth, safety on cam Speleoshoppe, 1980 119 100 76 24 182 16.2 22° 12 "z" teeth,
sprue between 5 & 6
Petzl Basic, Version E 14
1592
Petzl Basic, Version E RH, stamped frame, round top & round bottom holes, web cam /w cutout, sloping teeth, safety /w pin on cam Speleoshoppe, 1979 138 100 76 26 198 16.7 25° (F)(3.4)^3, (3.2)^2(1)
Petzl Basic, Version F 1553 Petzl Basic, Version F RH, stamped frame, round top & round bottom holes, web cam /w cutout, sloping teeth, safety /w pin on cam Julia Bloomer, 2011 141 102 78 24 194 17.1 28 (3.4)^2(3.2)^2(1)
Petzl Basic, Version G 1577 Petzl Basic, Version G RH, stamped frame, oval + round top & round bottom holes, web cam /w cutout, sloping teeth, safety /w pin on cam Geoffrey Storey, 2012 144 102 77 26 206 17.1 28° (3.4)^2(3.2)^2(1.2)
Petzl Basic, Version H 15 Petzl Basic, Version H RH, stamped frame, oval + round top & round bottom holes, pin cam stop, web cam /w cutout, sloping teeth, safety /w pin on cam Bob & Bob, 1988 145 102 76 26 202 15 25° (2.3)(1S1.2S2)(1S1)^4(1.2)
Petzl Basic, Version I 1570 Petzl Basic, Version I RH, stamped frame, oval + round top & round bottom holes, pin cam stop, web cam /w cutout, sloping teeth, safety /w pin on cam Dane Hardinge, 2012 144 102 78 29 229 15.0 25° (2.3)(2S2.1S1)^2(1S1)^3(1.2)
Petzl Basic, Version J 2066 Petzl Basic, Version J RH, stamped frame, oval + round top & round bottom holes, pin cam stop, web cam /w cutout, sloping teeth, anodizedsafety /w pin on cam Bob Thrun Collection, 2017 147 102 78 31 245 15.0 25° (2.3)(2S2.1S1)^2(1S1)^3(1.2)
Petzl Basic, Version K 1912 Petzl Basic, Version K RH, stamped frame, oval top & round bottom carabiner & keeper holes, stamped cam stop, web cam /w cutout, sloping teeth, safety /w pin on cam Bob & Bob, 1997 139 102 76 35 226 14.8 32° (3.1.4)(1S1.2S2)^2(1S1.2.3)
Petzl Basic, Version L 2083 Petzl Basic, Version L RH, stamped frame, oval + round top & round bottom holes, pin cam stop, web cam /w cutout, sloping teeth, safety /w pin on cam Bob Thrun Collection, 2017 152 82 78 28 249 15.0 25° (2.3)(2S2.1S1)^2(1S1)^3(1.2)
Petzl Basic, Version M 125 Petzl Basic, Version M RH, stamped frame, oval top & round bottom carabiner & keeper holes, stamped cam stop, web cam /w cutout, sloping teeth, safety /w pin on cam
  • Bob & Bob, 1997
  • Bob Thrun Collection, 2017
139 102 76 35 271 14.8 32° (3.4)(1S1.2S1)^2(1S1.2.3)
Petzl Basic, Version N 2082 Petzl Basic, Version N RH, stamped frame, oval top & round bottom carabiner & keeper holes, stamped cam stop, web cam /w cutout, sloping teeth, safety /w pin on cam Bob Thrun Collection, 2017 136 104 76 33 260 14.8 32° (3.1.4)(1S1.2S2)^2(1S1.2.3)
Petzl Basic, Version O 277
2084
Petzl Basic, Version O RH, stamped frame, oval top & round bottom carabiner & keeper holes, stamped cam stop, web cam /w  cutout, sloping teeth, safety /w pin on cam On Rope 1, 2009 137 104 76 33 261 14.7 30° (3.1.4)(1S1.2S1)^2(1S1.2.3)
Petzl Basic, Version P 1943
2059
Petzl Basic, Version P RH, stamped frame, round top & D-shaped bottom carabiner holes, web cam /w cutouts, sloping teeth, plastic safety on cam
  • On Rope 1, 2013
  • Bob Thrun Collection, 2017
87 103 60 26 161 13.2 38° (3.4)((1S1)^2.2S2)^2(3.4.3)
Petzl Croll, Version A 1960
2148
Petzl Croll, Version A LH chest, stamped frame, oval top hole, large oval bottom hole, web cam /w cutout, sloping teeth, safety /w pin on cam
  • Bob Thrun, 2013
  • Bob Thrun Collection, 2017
135 117 75 36 317 13.7 25° (F)(3.4)^3(3.2)^2(1)
Petzl Croll, Version B 10 Petzl Croll, Version B LH chest, stamped frame, oval top hole, large oval bottom hole, web cam /w cutout, sloping teeth, safety /w pin on cam Speleoshoppe, 1979 137 117 76 38 338 17.1 25° (F)(3.4)^3(3.2)^2(1)
Petzl Croll, Version C 295 Petzl Croll, Version C LH chest, stamped frame, oval top hole, large oval bottom hole, web cam /w cutout, sloping teeth, safety /w pin on cam
  • Bruce Ellison, 2009
  • Bob Thrun Collection, 2017
136 119 76 37 338 14.5 24° (3.4)^2(3.2)^2(1.2)
Petzl Croll, Version D 11
2147
Petzl Croll, Version D LH chest, stamped frame, oval top hole, large oval bottom hole, pin cam stop, web & bar cam /w cutouts, sloping teeth, Al D safety /w hole on cam Bob & Bob, 1988 138 119 76 39 353 15.9 25° (2.3)(2S2.1S1)^2(1S1)^3(1.2)
Petzl Croll, Version E1 214 Petzl Croll, Version E LH chest, stamped frame, large top hole, large oval bottom hole, pin cam stop, web & bar cam /w cutouts, sloping teeth, Al D safety /w hole on cam Andy Dopson, 2007 142 119 77 37 339 14.8 26° (2.3)(2S2.1S1)^2(1S1)^3(1.2)
Petzl Croll, Version E2 215 Petzl Croll, Version F LH chest, stamped frame, large top hole, large oval bottom hole, pin cam stop, web & bar cam /w cutouts, sloping teeth, Al D safety /w hole on cam Andy Dopson, 2007 142 119 78 38 352 14.8 26° (2.3)(2S2.1S1)^2(1S1)^3(1.2)
Petzl Croll, Version G 237 Petzl Croll, Version G LH chest, stamped frame, large top hole, large oval bottom hole, pin cam stop, web & bar cam /w cutouts, sloping teeth, anodized Al D safety on cam Ross Strother, 2008 144 119 81 38 364 16.3 26° (2.3)(2S2.1S1)^2(1S1)^3(1.2)
Petzl Croll, Version H 126 Petzl Croll, Version H LH chest, stamped frame, oval top hole, large oval bottom hole, stamped cam stop, web cam /w cutout, sloping teeth, plastic safety on cam Bob & Bob, 1997 130 103 70 38 274 14.2 32° (3.4)(1S1.2S1)^2(1S1.2.3)
Petzl Croll, Version I 2080 Petzl Croll, Version I LH chest, stamped frame, oval top hole, large oval bottom hole, stamped cam stop, web cam /w cutout, sloping teeth, plastic safety on cam Bob Thrun Collection, 2017 132 109 75 37 305 14.2 32° (3.1.4)(1S1.1S0.2S1)^2(1S1.2.3)
Petzl Croll, Version J 193
2081
Petzl Croll, Version J LH chest, stamped frame, large top hole, large oval bottom hole, stamped cam stop, web cam /w cutout, sloping teeth, plastic safety on cam
  • On Rope 1, 2005
  • Bob Thrun Collection, 2017
133 109 75 37 304 14.2 32° (3.1.4)(1S1.1S0.2S1)^2(1S1.2.3)
Petzl Croll, Version K 1965
2064
Petzl Croll, Version K LH chest, stamped frame /w SS insert, large oval top & bottom hols, web cam /w cutout, sloping teeth, plastic safety on cam
  • On Rope 1, 2013
  • Bob Thrun Collection, 2017
83 97 58 30 169 13.2 38° (3.4)((1S1)^2.2S2)^2(3.4.3)
Proverti CD 201 2019 Proverti CD 201 LH, extruded frame, pear top & bottom holes, web cam, straight teeth, stamped safety on cam Ondřej Belica, 2015 219 134 84 30 333 16.4 42° (3)(4.H)^2(3.H)^2(3.2.2)
Proverti CD 201L 2020 Proverti CD 201L RH, stamped frame, pear top hole, D bottom hole, web cam, straight teeth, stamped safety on cam Ondřej Belica, 2015 137 110 74 33 269 16.3 39° (2.4)(1S1.2S2)^2(1S1)(2.3)
Proverti CD 202 2034 Proverti CD 202 RH, extruded frame, pear top & bottom holes, web cam, straight teeth, stamped safety on cam Ondřej Belica, 2015 219 134 84 30 333 16.4 42° (3)(4.H)^2(3.H)^2(3.2.2)
Proverti CD 202L 2035 Proverti CD 202L LH, stamped frame, pear top hole, D bottom hole, web cam, straight teeth, stamped safety on cam Ondřej Belica, 2015 137 110 74 33 269 16.3 39° (2.4)(1S1.2S2)^2(1S1)(2.3)
Repetto (C.T.) Cirano 247 Repetto (C.T.) Cirano LH chest, stamped frame, oval top hole, large oval bottom hole, stamped cam stop, web & bar cam /w cutouts, sloping teeth, safety lever cam Expé-Spelemat, 2008 145 103 76 39 306 15.4 28° (3.2.4)(1H1.2)^3(1.2.2)
Repetto (C.T.) Stal'in 248 Repetto (C.T.) Stal'in RH, stamped frame, pear top holes, round bottom hole, stamped cam stop, web & bar cam /w cutouts, sloping teeth, safety lever cam Expé-Spelemat, 2008 154 110 74 28 232 16.5 28° (3.2.4)(1H1.2)^3(1.2.2)
Russian copy of Petzl Basic 21
2119
Russian copy of Petzl Basic RH, stamped frame, 2 round top & round bottom hole, web cam /w cutout, sloping teeth, safety /w knob on cam
  • John E. Weinel, Inc., 1990
  • Bob Thrun Collection, 2017
138 108 76 29 238 15.2 28° (4.3)^2(2)(2S2)^2(1S1)(2.3)^2(2)
Singing Rock 2023 Singing Rock LH chest, stamped frame, oval top hole, large oval bottom hole, stamped cam stop, web cam, sloping teeth, safety lever cam Over the Ground, 2015 146 106 77 35 286 15.0 31° (3.2.4)(1H1.2)^3(1.2.2)
Single Rope Technique A1 811 19
2155
Single Rope Technique A1 811 LH chest, extruded frame, round top & bottom holes, web cam /w cutouts, straight teeth, safety /w pin on cam
  • Inner Mountain Outfitters, 1994
  • Bob Thrun Collection, 2017
225 113 76 39 335 14.3 25° (3.4)^2(5.4)^2(3.4)^2(F)
Single Rope Technique A3 EXP 6 146 Single Rope Technique A3 EXP 6 LH & RH, 16 mm. rope, extruded frame, 2 top &2 round bottom holes (different sizes), web cam /w cutouts, straight teeth, safety /w knob on cam Single Rope Technique, 2000 280 113 82 31 282 17.9 29° (3.4)^2(5.4)^2(3.4)^2(F)
Single Rope Technique A3 Explorer, Version A 2207 Single Rope Technique A3 Explorer, Version A RH, extruded frame, 2 top & 2 round bottom holes (different sizes), web cam /w cutouts, straight teeth, safety /w knob on cam Bob Thrun Collection, 2017 229 111 78 26 223 14.5 27° (4.5)^3(4.3)^2(4.F)
Single Rope Technique A3 Explorer, Version B 18 Single Rope Technique A3 Explorer, Version B RH, extruded frame, 2 top &2 round bottom holes (different sizes), web cam /w cutouts, straight teeth, safety /w knob on cam Inner Mountain Outfitters, 1994 239 114 78 27 240 14.5 25° (F)(4.3)^5(4.F)
Single Rope Technique A4 816 L 148 Single Rope Technique A4 816 L LH chest, 16 mm. rope, extruded frame, round top & bottom holes, web cam /w cutouts, straight teeth, safety /w pin on cam Single Rope Technique, 2000 292 116 80 43 398 17.9 29° (3.4)^2(5.4)^2(3.4)^2(F)
Single Rope Technique A4-816, Version A 17
2153
Single Rope Technique A4-816, Version A LH chest, extruded frame, round top & bottom holes, web cam /w cutouts, straight teeth, safety /w pin on cam
  • Single Rope Technique, 1989
  • Bob Thrun Collection, 2017
279 118 81 46 438 17.7 27° (4.5)^3, (4.3)^2(4)
Single Rope Technique A4-816, Version B 2154 Single Rope Technique A4-816, Version B LH chest, extruded frame, round top & bottom holes, web cam /w cutouts, straight teeth, safety /w pin on cam Bob Thrun Collection, 2017 292 115 80 43 393 17.7 27° (4.5)^3, (4.3)^2(4)
Single Rope Technique G.P., Version A 16
2120
Single Rope Technique G.P., Version A LH & RH, extruded frame, round top & bottom holes, web cam /w cutouts, straight teeth, safety /w pin on cam
  • Inner Mountain Outfitters, 1988
  • Bob Thrun Collection, 2017
176 96 76 26 190 13.9 26° (4.5)^3(4.3^)3
Single Rope Technique G.P., Version B 1969 Single Rope Technique G.P., Version B RH, extruded frame, round top & bottom holes, web cam /w cutouts, straight teeth, safety /w pin on cam Melody Dawson, 2013 182 96 76 26 187 13.9 26° (4.5)^3(4.3^)3
Single Rope Technique / Rollgliss / DBI Sala Rescue Explorer 1959
2098
Single Rope Technique / Rollgliss / DBI Sala Rescue Explorer LH chest, extruded frame, top slot & oval bottom holes, web cam /w cutouts, straight teeth, safety on cam
  • ropeandrescue.com, 2013
  • Bob Thrun Collection, 2017
178 102 65 24 162 14.4 22° (4.5)^3, (4.3)^2(4)
SOB 1961
2151
SOB LH chest, stamped frame, large top hole, large oval bottom hole, web cam /w cutout, sloping teeth, safety on cam
  • Xuefei Liu, 2013
  • Bob Thrun Collection, 2017
140 114 82 34 318 16.8 33° (4)(1S1.2S2.1S1)(4)(1S1)^4(4)
Southpaw, Version A 260
2091
Southpaw, Version A RH, extruded frame,triangular bottom hole, barred cam, sloping Smilodon teeth, finger safety on cam top
  • Logan Garrison, 2008
  • Bob Thrun Collection, 2017
204 120 78 29 265 17.7 30° (5.4.2)(4.3)^4(2)
Southpaw, Version B 1538
2092
Southpaw, Version B RH, extruded frame,triangular bottom hole, barred cam, sloping Smilodon teeth, finger safety on cam top
  • Mike Bessette, 2010
  • Bob Thrun Collection, 2017
200 120 77 28 256 17.7 30° (5.4.2)(4.3)^4(2)
Spelet Dolní 1955 Spelet Dolní RH, stamped frame, oval and round top holes, round bottom hole, web cam /w cutout, sloping teeth, safety on cam Ondřej Belica, 2013 139 103 74 27 209 16.0 27° (F)(3.4)^3(3.2)^2(3)
Spent Prsní, nožní 1958 Spent Prsní, nožní LH chest, stamped frame, round holes, milled Al cam /w hard insert teeth, cam stop, safety on cam Ondřej Belica, 2013 165 127 81 37 381 15.2 22° (3.2)^5
Spent Universální 1957 Spent Universální RH, stamped frame, round holes, milled Al cam /w hard insert teeth, cam stop, safety on cam Ondřej Belica, 2013 153 109 77 26 220 15.2 22° (3.2)^5
Stregor, Version A 183 Stregor, Version A Ambidextrous, stamped Al shell, milled cam, Z teeth, carabiner hole Ural Sport, 2004 77 38 56 29 61  16.5 24° (Z)^10
Stregor, Version B 184 Stregor, Version B Ambidextrous, stamped Ti shell, milled cam, Z teeth, carabiner hole Ural Sport, 2004 77 38 56 26 56  16.5 24° (Z)^10
SUT 2334 SUT LH, chest, stamped frame, oval top & bottom holes, web cam /w cutouts, straight teeth, safety on cam Suntek, 2017 260 116 80 39 368 14.7 31° (3)(4.H)^2(3.H)^2(3.2.2)
Ural Alp Mini 179 Ural Alp Mini RH, Al back, steel cam, swinging Ti front plate, straight teeth Ural Sport, 2004 130 85 69 34 200  15.2  23° (3.2)^3
Ural Alp Mouse 10.21, Version A 180 Ural Alp Mouse 10.21, Version A RH, Ti case, steel cam, swinging front plate, straight teeth, carabiner hole Ural Sport, 2004 93 65 32 35 73  15.2  20° (3.2)^3
Ural Alp Mouse 10.21, Version B 189 Ural Alp Mouse 10.21, Version B RH, Ti case, steel cam, swinging front plate, straight teeth, carabiner hole Ural Sport, 2005 94 65 33 35 74  15.2  20° (3.2)^3
VauDe AB-20 Bloquer 135 VauDe AB-20 Bloquer RH, stamped frame, oval & round top holes, slotted & round lower holes, barred cam /w side mud grooves, sloping teeth, safety /w pin on cam Inner Mountain Outfitters, 1999 153 108 76 30 246 15 24° (3.2)^2(1.2)^2(B)
VauDe AC-30 Chest Ascender 140 VauDe AC-30 Chest Ascender LH Chest, stamped frame, oval top hole, large oval bottom hole, barred cam /w side mud grooves, sloping teeth, safety /w pin on cam Inner Mountain Outfitters, 1999  147 109 76 33 273 15 24°  (3.2)^2(1.2)^2(B)
Walkosz i Spółka Chest, Version A 20 Walkosz i Spółka Chest, Version A LH, chest, stamped frame, round top & bottom holes, web cam /w cutouts, sloping teeth, safety /w knob on cam John E. Weinel, Inc. 144 115 79 37 336 15.5 23° (3.2)^2(4)(3.2)^2(1.2)
Walkosz i Spółka Chest, Version B 2141 Walkosz i Spółka Chest, Version B LH, chest, stamped frame, round top & bottom holes, web cam /w cutouts, sloping teeth, safety /w pin on cam Bob Thrun Collection, 2017 158 118 77 37 340 15.2 24° (1S1.2S2)^2(1S1)^4(2)
Walkosz i Spółka Hand 2099 Walkosz i Spółka Hand RH, stamped frame, oval & round top holes, round lower hole, web cam /w mud groove, sloping teeth, safety /w pin on cam Bob Thrun Collection, 2017 157 103 81 28 230 16.7 27° (1S1.2S2)^2(1S1)^4(1.2)
Wild Country Ropeman 119
121
2133
Wild Country Ropeman, Version A Ambidextrous, stamped SS shell, extruded cam, Z teeth, carabiner hole
  • Exkursion, 1996,
  • John E. Weinel, Inc., 199
  • Bob Thrun Collection, 2017
60 38 53 32 64 16 26° (Z)^10
Wild Country Ropeman 2309 Wild Country Ropeman, Version B Ambidextrous, stamped SS shell, extruded cam, Z teeth, carabiner hole Bob Thrun Collection, 2017 60 38 53 32 64 16.0 26° (Z)^10
Wild Country Ropeman II 138
2132
Wild Country Ropeman II Ambidextrous, stamped SS shell, forged toothed SS cam, carabiner hole
  • Mountain Gear, 1999
  • Bob Thrun Collection, 2017
90 38 53 32 64 16.5 23° (3.4)^2, (2.4)^4(2)^2
Wild Country Ropeman Mk. 1F 1935
2134
Wild Country Ropeman Mk. 1F Ambidextrous, forged SS shell, extruded cam, Z teeth, carabiner hole
  • Backcountry Gear, 2012
  • Bob Thrun Collection, 2017
63 54 37 32 63 16.0 23° (Z)^10
Wild Country Ropeman Mk. 2F 1936
2135
Wild Country Ropeman Mk. 2F Ambidextrous, forged SS shell, forged toothed SS cam, carabiner hole
  • Backcountry Gear, 2012
  • Bob Thrun Collection, 2017
92 54 37 32 63 16.0 25° (3.4)^2(2.4)^4(2)^2
Wild Country Ropeman Mk. 3F 1937
2136
Wild Country Ropeman Mk. 3F Ambidextrous, forged SS shell, extruded cam, Z teeth, carabiner hole
  • Backcountry Gear, 2012
  • Bob Thrun Collection, 2017
69 63 30 27 53 15.5 23° (Z)^14
Xinda 2328 Xinda LH, chest, stamped frame, oval top & bottom holes, open cam, sloping teeth, safety lever on cam Kuang Kianjin, 2017 159 118 81 35 335 16.5 28° (3)^3(1S1)^5(3)^2
Yoke 1970
2101
Yoke LH, chest, stamped frame, oval top & bottom holes, web cam, sloping teeth, safety lever on cam
  • Kwikspace, 2014
  • Bob Thrun Collection, 2017
166 117 79 40 374 16.5 27° (3)^3(1S1)^5(3)^2

Eccentric Cam Ascender Weight Chart