Features: Brand new and high quality Suitable for strong impact and high-strength screw-driving operations, suitable for screwdrivers/electric screwdrivers/hand drills, impact screwdrivers Impact resistance, the bit hardness is as high as 62HRC, and the length is increased to absorb torque to reduce damage, and it is easy to penetrate steel plates, wood and the like with special nails. The whole is magnetic, which can be used for adsorption fixing screw operation It is treated with phosphating black, which is wear-resistant and not easy to rust Whether you're working in an automotive repair shops or tackling home improvement projects, this magnetic screwdriver head provides convenient and efficient screw tightening or loosening. Specifications: Material:D1 Steel Handle Dia:Approx.0.635cm/0.25inches Package Includes: 6Pcs Cross Screwdriver note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.