3 tools in one - cutter, wire twister and a pair of pliers. You can grip, twist and snip safety wire faster and better than ever before. Designed for aircraft, industrial and other "Vibrating" applications. The Safety Twist Plier is a versatile tool to help you do reliable safety-wiring (lock wiring) rapidly and consistently. Safety-wiring remains the most positive and assured method of securing critical fasteners that must not be allowed to back out: any tendency of the fastener to loosen is counteracted by tightening of the safety wire.