The truss rod wrench is made of premium metal, fine workmanship, smooth surface and high gloss, fits for Taylor guitars, Guild guitars and more.
There is a nut screwdriver at one end and a convenient Phillips screwdriver at the other end.
3 different size : 0.25inch/6.35mm,0.27inch/7mm,0.31 inch /8mm inner dimension nut screwdrive for truss rod adjustment, and Phillips screwdrive for removing screws from the cover.
Used for tweaking the amount of relief in the neck, suitable for electric guitar replacement parts.