GrooveTech Tools GTMM2 Guitar/Bass Multi Tool; The World's smallest Multi Tool for Guitar & Bass; for musicians who don't want to adjust Truss Rods (for this we have Item No. 431992) these sizes were removed on this tool in favor of other sizes needed for Tremolo Systems, String Action, Pickup Height and other basic work; this 14 in 1 Tool includes Hex wrenches, Screwdrivers, a precision ruler and a bottle opener

GrooveTech Tools (formerly Cruztools) Acoustic Guitar Tech Kit, GTATC1, provides everything you need to adjust your guitar perfectly plus an easy set-up guide: 4 mm and 5 mm hex wrenches, locking bit driver with bits, capo, string winder, telescopic mirror, easy set-up guide, polyester pouch with clear vinyl cover, pick pocket, compartment for manual and strings, pro-grade quality