Black Diamond Rocklock Twistlock Carabiner Gray. 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. Specifications for Black Diamond Rocklock Twistlock Carabiner: Manufacturer: Black Diamond Color: Gray Features of Black Diamond Rocklock Twistlock Carabiner 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. Package Contents: Black Diamond Rocklock Twistlock Carabiner Black Diamond BD2102581003ALL1: Rocklock Twistlock Carabiner Gray