Petzl Pro I'D L Descender FOR RESCUE: The I'D L is a self-braking descender designed for a technical rescue. MULTIFUNCTIONAL HANDLE: Unlocks the rope and controls the descent with the hand on the free end of the rope; moves more easily on horizontal or inclined terrain, thanks to the button on the handle. ANTI-PANIC FUNCTION: Will activate if the user pulls too hard on the handle; it brakes and stops the descent automatically. ANTI-ERROR CATCH: Helps to reduce the risk of an accident due to incorrect installation of the device on the rope. TAKES YOUR SLACK: Pivoting cam facilitates taking up the slack in the rope; can also be used to make a reversible haul system, and for short ascents (in conjunction with a FOOTAPE or FOOTCORD foot loop and an ASCENSION handled rope clamp).