The Cobra Pliers Jaw Protectors from KNIPEX Tools are made from a smooth plastic and are designed to prevent damage to workpieces by covering all the teeth of the tool. The protectors snap onto the jaw and give the user a firm, non-marring bite. Each set contains three pairs of plastic protective jaws (three upper jaws and three lower jaws) that are marked "top" and "bottom" for identification. Jaw protectors are available for the 7-1/4", 10", and 12" Cobra Pliers produced after 2007.