This WORX NITRO has superior S2 steel and HEX shafts blades for higher torque and wear resistance and round shafts for the smaller size precision screwdrivers. They also include Black Oxide Finished tips for enhanced corrosion resistance, magnetic tips for secure grip on fasteners, and soft grip handle for more comfort.This WORX NITRO Screwdriver set is designed for a wide variety of projects and repairs for appliances, furniture, automotive jobs, and so much more.,This WORX NITRO has superior S2 steel and HEX shafts blades for higher torque and wear resistance