Often called "fish wire," fish tape is extremely practical for running electrical wiring through restrained or hard-to-reach areas (ex.: installing new electrical cables in already closed walls). After having placed the fish tape in the intended conduit, a new cable is placed at the end of the tape and pulled through to exit opening. Stem made of 1/8 in. resistant steel wire, easy to wind and unwind. Durable handle and shock-resistant case.