D1 Anti-Slip and Shock-Proof Bits with Phillips Screwdriver Bits-Upgraded High Hardness and Strong Magnetic Bit,Non-Slip 1/4 Inch Hex Shank Cross Impact Driver Bit Set(12Pcs/Set+2Bit Holder)

Upgraded High Hardness and Strong Magnetic Bit:Built for high-impact high_strength screwdriving,Suitable for screwdrivers, especially impact drivers Non-slip Cross Impact Driver Bit:Upgraded High Hardness and Strong Magnetic Bit screw deep bite effectively reduces head slip-off, Greatly improve work efficiency Hardness≥62HRC:High precision optimization Material. The hardness of bit head is as high as 62HRC stronger and mofe durable Mechanics Principle Design:Strong torque,high torque After touching the screw head Impact screwdriver The resulting collision reaction force partly absorbed by torsion Effectively prevent the cutter head from breaking Anti-shock Magnetic Non-slip Bit:Upgraded High Hardness and Strong Magnetic Bit is treated with phosphating black, which is wear-resistant and not easy to rust, Manufacturer: SENGHUI