BD's largest locking biner, the Rocklock has a curved spine that maximizes the gate opening and a square hinge end that holds your belay loop securely in place. An excellent choice when rappelling or belaying with two ropes, the Rocklock's large capacity can handle multiple clove hitches at belays. Either version is easily operated with one hand. Features non-snagging keylock nose. Features: Weight (Screwgate): 75 g (2.6 oz) Strengths: Closed Gate: 23 kN (5170 lbf) Open Gate: 7 kN (1574 lbf) Minor Axis: 7 kN (1574 lbf) Large capacity for double-rope systems Curved spine maximizes gate opening Easily operated with one hand Non-snagging keylock nose