RescueToolMan.com and Howell Rescue Systems, Inc.

Its auto-locking feature combined with a locking position for the handle make the Petzl I’D an excellent descender for working on rope. Additional safety features include an anti-panic function that stops the descent if the handle is pushed too far and an anti-error safety catch that reduces the risk of an accident from the incorrect installation on the rope. Maximum descent distance: 660 ft. (200m). The Small (345D21) model has a safety clip on the swinging side plate that reduces the risk of dropping the device when removed from the rope, such as when passing intermediate anchors.