GrooveTech Acoustic Guitar Player Tech Kit Guitar players may know a little about truss rods and action, but few actually attempt adjustment. That’s a shame, because a good setup will improve your performance. Acoustic guitar truss rods are typically adjustable but access may not be easy, especially through the soundhole. Groovetech's Acoustic Guitar Tech Kit includes a clever locking bit driver that allows for quick interchange of bits, with special bits for both soundhole and headstock truss rod adjustment. Also included are tech kit staples such as thickness gauge and capo for relief measurement, screwdriver bits, string winder, the highly-rated GrooveTech String Cutters, and a telescopic mirror in case you need to have a look inside the remote cavities of the body. The included Easy Setup Guide takes all the mystery out of the set-up process, with its help your guitar will be up to shape in no time.