Premium Materials: Our impact torx bits is made of industrial grade S2 Alloy Steel, which is strong and durable, and has a black phosphate coating for corrosion resistance. Magnetic: The magnet of the impact square drill bit is stronger than other drill bits, and it can easily and quickly fix more screws to prevent the drill bit from slipping. High Torsion: The torsional region absorbs the peak torque, which helps to absorb the high torque of the impact driver and avoid fracture. Extend service life. General Size: Long 4 inch square bits sizes:SQ0x2, SQ1x2, SQ2x2, SQ3x2, SQ4x2. Wide Range of Uses: The 1/4 hex handle can be used with electric screwdrivers, hand screwdrivers, electric drills, combination general purpose tools. Used in automobiles, repairs, trucks, automobiles, engines, motorcycles, interiors, dashboards, computers, cable boxes, toys and appliances. UPC 712110351629 ASIN B0CZRMDLZ8 Set Name 10Pcs Square Drive Bits Set Brand Name LOZAGU Unit Count 1.0 Count Item Length 6 Inches Drive System Square Finish Types Powder Coated Manufacturer LOZAGU Model Number LOZ-SQ10 Material Type S2 Steel Item Type Name LOZ-SQ10 Number of Pieces 10 Drive Bit Shank Style Hex Shank Manufacturer Part Number LOZ-SQ10