Crimping Tool The purpose of a crimping tool is to prepare a network or cable for use, with an example of crimping being to adjoin a connector to the end of a cable. RJ-11 and RJ-45 connectors are common connectors used for cables, but they can be attached to the end of a cable with a crimping tool. Wire Stripper A wire stripper is used to remove a section of insulation at the end of a wire. It trims a bare wire to reach the end of the connector and helps it to match the connector base by simply inserting the wire into the correct gauge slot, and closing the jaws of the stripper for which the wire will then strip away from each other when pulled. ...