Our largest belay and rappel locker, the Black Diamond RockLock carabiner features a keylock nose, is Munter Hitch compatible and can be operated with one hand.Square hinge end holds belay loop securely in placeSlightly curved spine maximizes gate openingKeylock nose prevents snaggingOne-hand operableScrewgate sleeveWeight : 85 g (3 oz)Closed Gate Strength :  24 kN (5395 lbf)Open Gate Strength :  7 kN (1574 lbf)Minor Axis Strength :  7 kN (1574 lbf)Gate Opening :  21 mm (0.83