6Pcs D1 Anti-Slip and Shock-Proof Bits Screwdriver BitsHigh Hardness Strong Magnetic 25/50/65/70/90/150mm Non-slip Water Proof Bits

Suitable for strong impact and high-strength screw-driving operations, suitable for screwdrivers/electric screwdrivers/hand drills, especially for 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. And the whole is magnetized, which can be used for adsorption fixing screw operation. It is treated with phosphating black, which is wear-resistant and not easy to rust