The gearwrench® screwdrivers are ergonomically designed to fit your hand while on the job. The tri-lobe handle shape provides the best performance with the least amount of effort. The dual-material of the handle is oil and solvent-resistant. The tips have black oxide non-slip coating. The part numbers and sizes are lasers etched on the blade. Features ul style""margin-top0px; padding-top 5px; padding-bottom 5px;"" ergonomic tri-lobe dual material handle provides the optimal balance of strength and efficiency ""speed zone"" handle design for faster rotation in low-torque applications dual material handle offers a more comfortable grip and higher performance non-slip black oxide tip for more secure fit in fastener blades laser etched with part number and size for quick identification oil and solvent resistant handle provides a longer tool life full polish alloy steel screwdriver shaft prevents rust and corrosion meets or exceeds asme standards for performance and quality this product has a limited lifetime warranty