12 deep hex sockets: the package contains 12 different sizes of impact driver socket, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 17mm, 19mm, a rich number of sizes enough for your use. Silver in color and 80mm in length, they fit most corded or cordless drills. Robust chrome-vanadium alloy steel material: the hex nut adapters are made of extremely hard chrome-vanadium alloy steel, a synthetic metal of great hardness, with good resistance to wear, oxidation and fracture, which resists high bending stresses and therefore has a long life. Powerful Magnetism: Bit adapter is designed with internal hexagonal edges and fits a wide range of hex screws and nuts. The precision of the workmanship makes it possible to tighten the screw well and not to slip it easily. Each hex screw socket has a magnet inside to better attract the bolt or nut during use, for quick assembly and disassembly work. Easy to use : First, the deepening screwdriver socket ends with a universal 6.35 mm connector for a wide range of uses. The recessed hex design makes it easy to insert the nut. Simply remove the old hex socket, insert the appropriate type of hex rod, and tighten the screw to secure. The sleeve is suitable for mounting and dismounting bolts or nuts. Application: This hexagonal screwdriver socket is small and easy to carry, suitable for home DIY, furniture installation, car repair, professional machinery repair, etc. Can be used for pneumatic screwdrivers, electric screwdrivers, pneumatic drills, electric drills, gun drills, hand screwdrivers, etc.