1.with a large quantity to meet household maintenance needs, comes with a box for easy storage after use and is not easy to lose 2.Suitable for strong impact and high-strength screw-driving operations, suitable for screwdrivers/electric screwdrivers/hand drills, especially for impact screwdrivers 3. 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 4.Super strong magnetic force, which can be used for adsorption fixing screw operation 5. It is treated with phosphating black, which is wear-resistant and not easy to rust 6.The screwdriver head is equipped with anti slip threads, making it less prone to slipping and more tightly attached to the screw Model: Non-slip screwdriver Bit size:PH2 Tips: The product may be updated constantly, The Actual Product May Have Slight Differences Or Color Differences the color and appearance may be changed, please don't mind. And take a consideration before place the order if you have request for color or appearance. type:10 Pcs 50mm Colour:Black Material:steel Package Contents: 1 x Batch Head set 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.