Our largest belay and rappel locker, the Black Diamond RockLock carabiner features a keylock nose, is Munter Hitch compatible and the autolocking twistlock sleeve can be operated with one hand. Now featuring a hot-forged lightweight construction, a redesigned spine for better handling, and a larger rope-bearing surface for greater durability, the RockLock is the go-to screwgate for every day climbing season after season. Hot-Forged for lighter-weight construction Square hinge end holds belay loop securely in place Slightly curved spine maximizes gate opening Keylock nose prevents snagging One-hand operable Autolocking Twistlock sleeve Type H or HMS connector. For dynamic belaying using a Munter Hitch or belay device. TECH SPECS Weight : 89 g (3.1 oz) Closed Gate Strength : 24 kN (5395 lbf) Open Gate Strength : 8 kN (1798 lbf) Minor Axis Strength : 8 kN (1798 lbf) Gate Opening : 24 mm (0.95 in)