I acquired my AMP Outdoor 8 on eBay from Backyard Zip Lines in 2014.
The AMP Outdoor 8 is forged from aluminum alloy and then soft anodized. Mine is 110 mm. tall, 80 mm. wide, and 18 mm. thick. The rope hole is 35 mm. high and 54 mm. wide. The top center thickness is 11 mm. The shaft length and width are 37 mm. and 25 mm., respectively. The eye measures 20 mm. by 25 mm. The ears are 8.8 mm. long. My AMP Outdoor 8 weighs 94 g.
The concave side of the eight is screened with "8146-2 13C3 AMP." The concave side of the shaft has "kN25" in raised forged letters.
This is one of the following family of essentially identical "mini" size figure eight with ears:
|Ace||Fusion (Good Makings) Compact Bent 8|
|AMP Outdoor 8||Good Makings, Version B|
|Climb X Mini Rescue 8 With Ears||Mad Rock Small Rescue 8|
|Faders Ballet||Proverti CD 302|
These are small eights, and lighter than most figure eights with ears. If these were flat, they would create more friction than most. The bend allows them to be rigged two ways with differing amounts of friction. Even so, the rope hole is shorter than normal, so these eights may provide too much friction on stiff or muddy ropes.
Other small eights have similar bends. Examples are the Chouinard Version B, Faders, Frendo Version B, Kabelwerk Oberspree (perhaps the original design motivating for all of these - and yet not intended to be an eight at all!), and the Trango Penta, but this eight and its equivalents also have ears. Better yet, the ears are placed low where they can function effectively without increasing the size of the eight. For eared eights, I like this design enough to give each example a star.