About this item

• Brand new and high quality
• Suitable for strong and high-strength screw-driving operations, suitable for screwdrivers/electric screwdrivers/hand drills, screwdrivers
• 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
• It is treated with phosphating black, which is wear-resistant and not easy to rust