StewMac Endpin Jack Wrench – 8" Hollow-Shaft 9/16" Deep Socket Nut Driver for Acoustic Guitar Endpin Jack Installation Through Soundhole

Tighten an endpin jack from inside the guitar without the painful arm contortions.This purpose-built wrench is a specially modified 9/16" deep-socket hollow-shaft nut driver with an 8" reach, designed to access and secure the installation nut through a soundhole. A precision-machined slot slides neatly over the jack’s wire, solder prongs, and nut, so you can work cleanly without stressing connections.Ideal for acoustic-electric installs and repairsUse it to snug an endpin output jack during installation, pickup swaps, or service—when fingers and standard tools can’t reach. If you’ve ever searched for a tool to tighten an endpin jack inside an acoustic guitar, this is the clean, controlled solution.Quick FAQBest way to tighten an endpin jack through a soundholeTool that tightens an output jack nut without twisting the wiresHow to install an acoustic guitar endpin jack cleanlyEndpin jack wrench for acoustic electric guitar repairs BUILT TO LAST A LIFETIME: All StewMac tools are backed by our Lifetime Promise for lifelong durability and our expert tech support is there when you need it most

• DESIGNED FOR END-PIN JACK INSTALLS: Specially slotted to fit around jack wiring and solder prongs without damage
• PRO-QUALITY TOOL FOR LUTHIERS: Engineered for precision work by professional guitar techs and serious players
• 9/16" HOLLOW SHAFT SOCKET: Deep socket nut driver reaches inside the soundhole to tighten endpin jack nuts securely
• 8-INCH OVERALL LENGTH: Extended reach makes inside-the-body access easier than ever
• BUILT TO LAST A LIFETIME: All StewMac tools are backed by our Lifetime Promise for lifelong durability and our expert tech support is there when you need it most