Final SALE: For safety reasons, we cannot accept returns on load-bearing Climbing equipment. Sorry for being so mean. Features of the Petzl Rescucender Rope Grab Openable cam allows installation or removal of the rope clamp at any point on the rope Independent safety catches on each side of the device allow easy opening while reducing the risk of accidental opening Cam integrated into frame of device to facilitate handling Large attachment hole to facilitate carabiner rotation Integrated cam spring helps avoid accidental snagging and increases durability