Pliers: also called repair mouth clamp, is mainly used to shear line size is fine single strand and multi strand line, as well as to single stranded conductor joint bending circle, stripping of plastic insulating layer, it is also the electrician (especially inside electrician) one of the common tools, it is composed of tip, a cutting edge and a forceps handle. Insulated bushings clamp clamp handle with rated voltage of 500V on the set of electrician. Needle nose pliers due to head a sharp, use and narrow space operations using pointed nose pliers curved conductor joint method of operation: first thread left off and close to the screw clockwise turn right.