Black Diamond RockLock TwistLock Carabiner - Black Diamond 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 and a large rope-bearing surface for greater durability, the RockLock is the go-to screwgate for every day climbing season after season. Features Hot Forged Construction - Allowing us to remove weight where it's not needed and add material where durability is key, Hot Forged Construction gives the geometry of our equipment the perfect balance between weight, strength, and performance. Manufacturer 2 Year Warranty