GEARWRENCH 51-piece master screwdriver set includes a large variety of Phillips, Slotted, Torx, Pozidriv, and Square screwdrivers. Ergonomic tri-lobe dual material handle provides the optimal balance of strength and efficiency, while also being oil and solvent resistant. “Speed zone” design allows for faster rotation in low-torque applications. The alloy steel shaft prevents corrosion, and is laser etched with part number and size for quick identification. Size indicators are shown on the bottom of the screwdrivers as well. Features a non-slip black oxide tip that provides a more secure fit in a fastener.