The Black Diamond RockLock Screwgate Carabiner is a reliable choice for belaying, rappelling, and climbing tasks that demand secure handling. It features hotforged construction for weight savings and reinforced durability, plus a keylock nose that prevents snags while clipping. The screwgate operates smoothly with one hand, and the square hinge end helps center the belay loop. With its curved spine for an expanded gate opening and Type H HMS certification, this carabiner is ready for dynamic belay use with devices or a Munter Hitch.