made of titanium ti6alv4; a 20 gram (less than one ounce) lightweight axle nut in a shapely design, innovative pin-lock secure high locking characteristics; multifunctional application: safety for different bolted joints such as rear axles, pivot shafts, yokes etc.; no TÜV certificate required, plastic-pin of the pin-lock accommodate thread form and locks with friction, simple assembly with a regular hexagon nut.