Our SHOCKWAVE™ 55 Piece Impact Driver Bit Set features bits engineered to be the Most Durable, Best Fitting driver bits on the market. The impact driver bits feature Wear Guard Tip™ that delivers increased wear resistance which protects the fit over the life of the bit. The Shockzone™ is optimized for for each tip type and length of driver bit to absorb peak torque and prevent breaking. The Milwaukee impact driver bit set features Custom Alloy76™ steel, heat treated per tip type to extend the life of the driver bits, providing up to 50X life vs. competitive impact driver bits. The MILWAUKEE® SHOCKWAVE™ driver bits are built to deliver extreme durability for the most demanding applications.