The Rapid RP110 Rivet Nut Pliers have been designed to provide a solution when fastening materials together without access to the rear to tighten a bolt. With this tough, die-cast aluminium tool, you can insert M3, M4, M5 and M6 rivet nuts & ndash internally threaded tubular rivets. Once in place, a screw is inserted into the rivet nut, allowing the two materials to be fastened securely without using a bolt & ndash and unlike normal rivets which cannot be easily removed, rivet nuts allow for simple removal should this be required. Other features include a forged steel lever, hardened jaws for long lifetime and soft grip handles for optimal comfort.