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® 48-32-4962 ShockWave™ Impact Phillips Bits, PH2, 2 in, 2 pk