Petzl AM'D Ball Lock Carabiner
The Am’D asymmetrical aluminum carabiner has a D shape best suited for connecting a belay system or for holding gear. The ergonomic shape and Keylock system make it easy to handle, even when wearing gloves. The Am’D carabiner is available in three locking system versions: manual SCREW-LOCK system, or automatic BALL-LOCK and TWIST-LOCK systems.