Features 1、Made of high-quality alloy steel, high hardness, sandblasted surface, smooth and beautiful, corrosion resistant, not easy to wear. 2、The bit is 50mm long, with magnetical design, easy to absorb screws, convenient to operate and improve work efficiency. 3、The bit set can be used with drill only, with clear markings on the surface, easy to find the required size quickly. Specification Features: Made of high-quality alloy steel, high hardness, sandblasted surface, smooth and beautiful, corrosion resistant, not easy to wear. The bit is 50mm long, with magnetical design, easy to absorb screws, convenient to operate and improve work efficiency. The bit set can be used with drill only, with clear markings on the surface, easy to find the required size quickly. Fine workmanship, can be used with electric drill, electric screwdriver, hand screwdriver, impact screwdriver. Delivery includes 12 screwdriver bits, T5, T6, T7, T8, T9, T10, T15, T20, T25, T27, T30 and T40. Specifications: Color: Black Material: Alloy Steel Size: T5, T6, T7, T8, T9, T10, T15, T20, T25, T27, T30, T40 Package Size: 70 * 70 * 15mm/ 2.8 * 2.8 * 0.6in Package Weight: 105g/ 3.7oz Packing List: 1 * Drill Bit Set(12-Piece) Package List 1 * Drill Bit Set(12-Piece)