StewMac Endpin Jack Wrench 1810

Endpin jack wrench
No more painful arm contortions when working through a soundhole! A machined slot lets this wrench slide neatly over the jack's wire, solder prongs and nut.

The specially modified deep-socket 9/16 inch hollow-shaft nut driver solves the problem of tightening an endpin jack's installation nut inside a guitar.