Easier handling: �Sheave mounted on sealed ball bearings for excellent efficiency �Gate opening on the non-pulley side, to facilitate installation on devices �Keylock system prevents any accidental snagging of the carabiner when putting the pulley in place H cross-section of carabiner: �Ensures an improved strength-to-weight ratio �Protects markings from abrasion �Two locking systems available: �TRIACT-LOCK: automatic locking with triple-action gate opening �SCREW-LOCK: the manual screw-lock with red band provides a visual warning when the carabiner is unlocked