Crimping pliers can be used to cut, strip and clamp UTP (Unshielded twisted pair) and STP cables. They also connect cables with Rj11 or Rj45 connectors. Crimping pliers can be used in the automotive industry to flatten, strip or cut insulation from vehicle electrical. The top head and bottom body of the crimping tool are two separate parts. The head is used to connect the UTP cable and the connector head. The header holds the brass wire to ensure that the fibers are arranged neatly in the connector according to the color.