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 place. Slightly curved spine maximizes gate opening. Keylock nose prevents snagging. One-hand operable. Screwgate sleeve. Type H or HMS connector. For dynamic belaying using a Munter Hitch or belay device.. Weight: 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 in). Imported. 793661433019 34594400006 210256