The C.A.M.P. USA Nitro HMS Keylock screwgate carabiner weighs only 55g and is a perfect choice for belaying, rappelling and rigging. Key lock nose wont snag on pro, ropes or slings, making the biner simple to clip. I-beam construction creates a high strength-to-weight ratio. Rounded edges reduce friction with rope. HMS biner offers easy handling and facilitates belaying single ropes with a Munter hitch.