1. Suitable for strong impact and high-strength screw-driving operations, suitable for screwdrivers/electric screwdrivers/hand drills, especially for impact screwdrivers 2. 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 3. And the whole is magnetized, which can be used for adsorption fixing screw operation 4. It is treated with phosphating black, which is wear- and not easy to rust Model:Non-slip screwdriver Bit size:PH2 Quantity:10pcs Colour:Black & Material:Alloy Steel Size:65mm Package Contents: 10 * Screwdriver Bit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.