Make your DIY projects easier, and save time and effort! Features QUICK CHANGE Universal 1/4'' hex shanks that fit quick change/release and secure locking of standard chucks, drills, screwdrivers, and screw guns. Can be installed in hex tools such as pneumatic screwdrivers, electric screwdrivers, pneumatic drills, electric drills, pistol drills, manual screwdrivers, and more. HIGH HARDNESS AND CORROSION RESISTANCE Each Set is made from high-quality chrome vanadium steel for extra wear resistance and durability against wear and corrosion. EASY STORAGEComes with a storage case that keeps the parts together, making it easier to carry and organize them. WIDE SPECTRUM OF APPLICATIONS Universal 1/4 inch hex shanks fit quick change chucks and all types of drills, electric screwdrivers, impact wrenches, cordless drills, screwdrivers, etc. Can be used for household tasks, car parts, woodworking, professional machinery, contractor repair, Dewalt Drill, mechanics, and craftsmen, etc. Specifications Shaft size: 6.3 mm (1/4) Bit sizes: 5 mm 5.5 mm 6 mm 6 mm 7 mm 8 mm 8 mm 10 mm 12 mm Bit sizes: 3/16 (4.76 mm), 1/4 (6.35 mm), 9/32 (7.14 mm), 5/16 (7.93 mm), 3/8 (9.53 mm), 7/16 (8.73 mm) 11/32 (8.73 mm), 3/8 (9.53 mm), 7/16 (11.11 mm) Fits all drills, screwdrivers, battery-powered and magnetic screwdrivers Sandblasted