The Petzl Tibloc is a small, lightweight rope clamp / grab for emergency use. This is the smallest and lightest rope clamp / grab on the market. It will get you out of many difficult situations, such as setting up a quick hauling system or climbing a rope. This is an emergency rope clamp / grab which you should always keep close at hand. Return Policy: Climbing equipment sales are final. In order to guarantee the life saving integrity of the climbing gear we sell -- we cannot accept returns on any life safety climbing or mountaineering equipment.