The Dunlop Groovetech Guitar/Bass Multi-Tool is the ultimate must-have for all guitar and bass players. With three ball-end hex wrenches, a 5/16" nut driver, additional hex wrenches, a 2.5mm slotted screwdriver, Phillips screwdrivers, and a ruler, you'll have everything you need for truss rod adjustments, bridge and tremolo adjustments, and even pick guard or neck plate removal. Compact and portable, this multi-tool is a professional's dream for on-the-go maintenance and set-up.