The GrooveTech Jack & Pot Wrench takes all the frustration out of tightening your instrument and amp jacks. Featuring three deep, thin-walled sockets—1/2”, 7/16”, and 12mm—this compact tool will easily access and handle the most common sizes of jacks, pots, and tuner nuts on instruments, amps, and other audio gear—even those with long shafts and tuning posts. Sockets are pro-grade with a dazzling polished chrome finish. GrooveTech Tools offer a lifetime of quality instrument care for players of all levels. They're built to last in the workshop and on the road, and they're easy to use so that anyone can start working toward a better playing experience. Every tool. Every need. Every player.