Product Details Fangrui Product Details 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 Hardness2hrc-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, Dont 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