A loose nut on a 1/4" jack is trouble. It's no fun to watch the jack disappear into your guitar or amp as the nut falls off, or to break a solder connection when you tighten the nut and the jack turns with it. Jack The Gripper is an ingenious tool that holds the jack steady so you can tighten or loosen the nut securely without disassembling your instrument or amp.
Designed by veteran repairman Frank Ford, Jack The Gripper is a smart tool that can save you a lot of time and work. Insert it into the jack, and the knurled cam locks in either direction, to hold the jack firmly while you tighten or loosen the nut.
Recessed jack? No problem—the tool also includes a clever steel adapter handle for use with your 3/8" square drive socket.