The rockD is the carabiner of choice when seeking the highest strength in a standard-sized aluminum frame. Auto-lock, Screw-lock and other gate options, the rockD carabiner serves the broadest range of specialized uses. The rockD in non-lanyard versions, features a flattened profile with an I-beam profile at the bottom and top bends, giving the carabiner a sleek profile, while providing low weight and high strength characteristics.