Extremely smooth belay & rappel carabiner with secure screw lock Curved spine offers exceptional clearance Large opening & keylock nose make clipping ropes & webbing easy The Camp HMS Compact Lock Carabiner's unique rounded design positions ropes perfectly for rappels & creates a very wide gate opening with substantial inner working space. Unlike many belay carabiners, the HMS Compact has no corners so ropes have nowhere to bunch, resulting in less friction for smoother rappels & belays & helps keep heat to a minimum on long rappels. WEIGHT: 89g (3.1oz)