This special open-end steel wrench is only .075" slim. It's designed to easily access the thin 1/2" mounting nut on an acoustic guitar endpin jack, without marring the nut. The other end accesses a 14mm mounting nut on a flush-mount output jack, as found on many solidbody guitars.
See details below
Switchjack Endpin Jack
Tightens from outside the guitar, for easier installation in acoustic pickup systems.
Endpin Jack Wrench
A specially modified deep-socket 9/16" hollow-shaft nut driver that solves the problem of tightening an endpin jack's installation nut inside a guitar.
Endpin Jack Reamer
Enlarge an endpin hole for a 15/32" or 1/2"-diameter jack with this custom steel reamer.
Knob and Bushing Puller NEW!
Remove a stubborn knob without damaging the plastic, or your finish.