GM CLIMBING HMS Screw Locking Carabiner 25kN 5600lbf Solid Construction for Belay Rappel Biner Outdoor Climbing Tactical HMS Locking carabiner, with its asymmetrical shape, is widely used with most belay or rappel device. Solidly built and easy-to-handle shape make it comfortable during operation. SNAG-FREE! Keylock nose prevents from rope sngging, reducing the risk of inappropriate use during operation. Made of light aricraft-grade aluminum, extra metal parts are removed off, which make the carabiner stay in excellent quality while keep as light as possible. ROPE FRIENDLY! The part of carabiner where the rope comes in direct contact is designed to be rounded with the purpose that rope runs smoothly.