Screwgate Locking Carabiner Clip - Professional Rock Climbing Carabiner Screw Lock,Heavy Duty Carabiners for Climbing,Mountaineer,Hammock,Camping,Outdoor EquipmentD Shape Carabiner: Classic D shape carries the majority of the load toward the spine,the carabiner's strongest axis. Keylock nose guards against snagging. D shape is particularly suited for connection to equipment such as a belay system,a pulley,descenders or the end of a lanyard. It is efficient in a variety of situations and provides good handling and grip,even when wearing gloves. Heavy Duty Carabiner: Major axis: 25KN (5500lbs), Minor axis: 8kN,