Groovetech® Casetools Multi-Tool for Fender® USA Guitars. Allows you to make quick tweaks to your Fender USA Guitar. Small enough to fit in the palm of your hand. It features four sides: c" ball-end hex wrench for truss rod adjustments, 1/16" and ½" hex wrenches for bridge adjustments and a Phillips screwdriver bit shaped to handle both #1 and #2 neck and pickguard screws. Made from pro-grade vanadium steel. Green comfort grip.