Features Non Slip: The screwdriver bit has a high accuracy concentric shaft, not easy to slip and shake, straight concentricity, not easy to slip and wear, more durable. High Hardness: The screwdriver bit is forged from selected material through S2 alloy steel, heat treated bit, high hardness, strong magnetism, high torsion, more durable. Easy Disassembly: The screwdriver bit is assembled with a tight bite and can be easily disassembled for a secure and safe fit and easier work. Magnetic Treatment: The screwdriver bit is magnetised as a whole, and the batch head is magnetised as a whole, so that the screw can be firmly attached during use. Wide Application: This screwdriver bit has a standard shank diameter of 6.35mm and is suitable for use with electric drills, air driven, electric and rechargeable screwdrivers etc. Specification: Item Type: Screwdriver Bit Material: Alloy steel Color: Blue and Silver Use: Suitable for electric screwdrivers, hand screwdrivers, electric drills, air drills and cordless drills, ideal for repairing household appliances, accurate instruments and furniture Package List: 10 x Screwdriver Bit 1 x Magnetizer Package List 10 x Screwdriver Bit 1 x Magnetizer