Premium Materials: Our impact phillips 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 cross drill bit is stronger than other drill bits, and it can easily and quickly fix more screws to prevent the drill bit from slipping. (1 inch phillips bits no magnetism!) 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. Wide Range of Uses: Used in automobiles, repairs, trucks, automobiles, engines, motorcycles, interiors, dashboards, computers, cable boxes, toys and appliances. General tools: The 1/4" hex handle can be used with electric screwdrivers, hand screwdrivers, electric drills, combination general purpose tools. Premium Materials: Our impact phillips bits is made of industrial grade S2 Alloy Steel, which is strong and durable, and has a black phosphate coating for corrosion resistance.