Features: 1.These hex wrenches are designed to be L type and with 8 different size including 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 5.5mm,6mm. 2.Comes with a screwdriver, which is double end ? slot and cross, can meet your different requirements of screwing or unscrewing nuts. 3.Made of carbon steel material, the hex key set as well as the screwdriver isnot easy to get corrosion. Wear resistant, durable. 4.Hex wrench set cooperate with screwdriver can help you adjust or replace the tunes. 5.These tools are suitable for repairing most folk guitars, electric guitars andbasses. specification:Item Type: Hex wrench Material: 45#Carbon steel Double End of Screwdriver: Slot, cross Hex Wrench Size(Approx.): 1.5mm / 0.06in 2mm / 0.08in 2.5mm / 0.1in 3mm / 0.12in 4mm / 0.16in 5mm / 0.2in 5.5mm / 0.22in 6mm / 0.24in PackageList:8 x Hex Wrench1 x Screwdriver