Impact Tough design – provides 10X life over standard bits, with an Xtended Torsion Zone, hardened core and precision tipXtended Torsion Zone – helps to absorb the torque peaks of impact drivers to avoid breakagePrecision-engineered bit tips – deliver a better fit and less cam-outHeat-treated bit manufacturing – provides stronger bitHex interface – made to fit 1/4 In. hex impact driversHardened-core manufacturing – increases bit strengthHigh-quality forged steel – supplies durability for long accessory lifeLaser-etched markings – lasts for the life of bit, and they’re easier to read