DEWALT 37-Piece Steel Hex Shank Screwdriver Bit SetHardened steel screwdriver bits Optimized design provides less bit cam out For use in all drill drivers 30 day money back guarantee Independently certified to meet applicable standards Features Series Name N A Sub Brand NA Bit Size Set Bit Length Set Head Type Set Shank Size 1 4 in Shank Type Hex Double Ended No Coating Uncoated steel Case Type Hard Package Quantity 37 Set Individual Set Material Steel Warranty None Brand Model Compatibility Universal