Shock Screwdriver Bits- Built for high-impact high_strength screwdriving,Suitable for screwdrivers, especially impact drivers Non-slip serrated blade- Saygooibye to screwslippage Screw deep bite effectively reduces head slippage Greatly improve work efficiency Hardness≥62HRC-High precision optimization Material. The hardness of bit head is as high as 62HRC stronger and mofe Mechanics Principle Design- Strong torque,high torque After touching the screw head Impact screwdriver The resulXting collision reaction force partly absorbed by torsion Effectively prevent the cutter head from breaking Shock Proof-Qufckthrough metal Shock reststantand notcracked Easily penetrate metal plates with dovetail nails Contains: 6 wire drill bits, 1 magnetizer (random colors, don't accept the specified color) Colour:black Material:Metal Package Contents: 1 x screwdriver bits 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.