The Revolver&';s integrated pulley wheel allows ropes to run more efficiently through the carabiner. Used at changes of direction on a route, it helps reduce rope drag. The Revolver is also highly useful for creating lightweight hauling systems. If you need to haul kit, a partner, or perform crevasse rescue, the pulley wheel increases the efficiency and converting more of your energy into movement. A locking gate gives the Revolver extra security.