Features: Brand new and high quality Hex head drill bit set are made from Industrial grade alloy steel bit, hardened to reduce wear-outs. Manganese Phosphate surfaces to prevent rust, ensures their durability. In the Following Sizes 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 5mm, 6mm, 7mm, 8mm. Length: 50mm(2”). Sizes are stamped on bit and white-printed on storage for faster recognition. Strong magnetic tips can easy to hold the screws and tightly absorb the screws. Not easy to fall off, no slipping during use. The magnetism doesn’t decay after multiple uses Come with a chain buckle and a secure bit holder, which can be hung on a your keychain, tool belt, making it easy to store and transport them wherever you need them. Can be used with electric screwdrivers, hand screwdrivers, electric drills, combination general purpose tools and any standard drill.Usually used for mechanical equipment, automobiles, motorcycles, bicycles, furniture, electronic equipment,etc. Specifications: Material:S2 Steel Length:Approx.50mm/1.96inch Shank Dia:Approx.6.35mm Package Includes: 10Pcs Drill Bit note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.