[High-Quality Magnetic Bit Holder] The main material of the magnetic nut driver set is chrome vanadium steel, forged through high-temperature quenching and heat treatment. It has good abrasion resistance, high hardness, high torque, and corrosion resistance. [Powerful Magnetic Screwdriver Bit] The Power Nut driver's magnetic bit has a built-in magnetic core, strong adsorption force. Super easy to grip and hold screws. Provides great convenience for your work. [Easy-to-Use Impact Screwdriver Bit] The 1/4 \" socket adapter is very easy to use, suitable for a variety of quick-change chucks. Size: Length: 65 mm / 2.56 inches; Hex Socket: 10 mm; Hex Shank: 1/4 inch. [Adapter Sleeve Excellent Compatibility] The magnetic nut driver set is compatible with all 1/4 adapter shank drills, electric hand drills, rechargeable drills, lithium drills, impact drivers, pneumatic drills, pneumatic screwdrivers, manual screwdrivers, and more. Magnetic bit holder, 10 mm 1/4 \" hex socket with quick-change groove for electric hand drill/lithium drill/pneumatic screwdriver/impact driver - 5 pcs. The screwdriver socket adapter is made of chrome vanadium steel, forged through quenching and high-temperature heat treatment. It has good abrasion resistance, high hardness, high torque, and corrosion resistance. The magnetic screwdriver bit is suitable for all 1/4 \" hex shank drills, electric hand drills, rechargeable drills, lithium drills, impact drivers, pneumatic drills, air screwdrivers, manual screwdrivers, and more magnetic bit holders. Specification: Length: 65 mm / 2.56 inches; Hex Socket: 10 mm; Hex Shank: 1/4 inch. Package includes: 10 mm nut driver set (5-pack) x 1