ITEM NAME:35 KN Rock Climbing Rescue 8-Shaped Transmission Mounting Plate Rappel Gear X4M2 35 KN Rock Climbing Rescue 8-Shaped Transmission Mounting Plate Rappel Gear X4M2 [Material] A7075 aviation aluminum alloy, 8-shaped drop effect is excellent, high strength [bending volume] 8-13 mm. Surface anodized to minimize friction between the rope and the shell device No. 8, preventing damage to the rope and protecting the fingers from burns [Usage