Simple to use and ergonomic 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. These safety catches are equipped with an unlocked indicator. Cam integrated into the frame of the device to facilitate handling Petzl's Rescucender is a cam-loaded rope clamp that can be opened while on the rope. Use the Rescucender in haul systems as a tractor or progress capture device. Simple to use, the integrated cam spring helps to avoid snags, and the large attachment hole facilitates carabiner rotation. Specifications: Materials: aluminum, stainless steel, nylon Weight: 260 g Rope compatibility: 9-13 mm