Our ShockWave™ Impact Duty™ Phillips® bits are engineered to be the most durable, best fitting driver bits on the market. The Phillips® bits feature Wear Guard Tip™ for increased wear resistance which protects the fit over the life of the bit. The impact driver bits have and optimized Shockzone™ for each tip type and length of driver bit to absorb peak torque and prevent breaking. The Custom Alloy76™ Steel is customized and heat treated per tip type to extend the life of the driver but by up to 50X vs. competitive impact driver bits. The Milwaukee® ShockWave™ Impact Duty™ driver bits are built to deliver extreme durability for the most demanding applications. Milwaukee® 48-32-4412 ShockWave™ Impact Duty™ Impact Phillips® Bit, PH2 Phillips®, 1 in, 2 pk