The Bullet guitar jack tightening tool is used to tighten jacks from the outside to prevent the jack from spinning when tightening causing breaking of solder joints. Simply push stem firmly into jack, maintain pressure to keep jack from turning and position wrench on nut and tighten. Can be used with instrument jacks, pedals, amps, mixing boards etc.

Available in standard 1/4″ for domestic size nuts & 11mm for import size nuts