SK 7716 6-Inch Automatic Return Reversible Wire Twister Plier With the quality you expect from SK, our safety wire twisting pliers provide the technician results that conform to the highest standards, including aerospace applications These products are used in aviation, racing, industrial, and military applications where vibration is found and loose fasteners may result in a catastrophic consequence The SK automatic return wire twister pliers features return springs to twist the pliers and therefore the wire A must for a technician who uses the tools everyday, protecting him/her from fatigue