EASIER HANDLING: Sheave mounted on sealed ball bearings for excellent efficiency. MULTIUSE: Gate opening on the non-pulley side, to facilitate installation on devices. LOCK IT UP: Keylock system prevents any accidental snagging of the carabiner when putting the pulley in place. FULLY EQUIPPED: The H cross section of carabiner ensures an improved strength-to-weight ratio and protects markings from abrasion. LOCKING SYSTEMS: Two locking systems available, TRIACT-LOCK and SCREW-LOCK.