This 10-in-1 multi-tool provides the tools needed for most standard adjustments on your guitar and bass. It features U.S. and metric sized keys of long lasting, heat treated steel in a compact design. Features 3 fractional hex keys (0.05", 1/8", 3/16"), 4 metric hex keys (1.5mm, 2.5mm, 3mm, 4mm), 2 Phillips screwdrivers, and 1 slotted (flathead) screwdriver.