This portable, all-in-one multi-tool is equipped with every tool you need to make sure your guitar is at its best. • Side a Includes: 5/16” truss rod socket, 4mm slotted screwdriver, 1/8” hex key, 1/16” hex key • Side a continued: 0.05” hex key, & Lever with laser engraved Reference marks (3/64" and 5/64") for adjusting action at the 12th fret • Side B Includes: 1.5mm hex key, 2mm hex key, 2.5mm hex key, 3mm hex key, #1 Phillips screwdriver, & #2 Phillips screwdriver • Lightweight & portable • All metal construction