Shockwave Impact Driver Bits are engineered to be the Most Durable, Best Fitting driver bits on the market. The Wear Guard Tip delivers increased wear resistance which protects your impact bit's fit over the life of the bit. The Shockzone is optimized for each tip type and length of driver bit in the set to absorb peak torque and prevent breaking. The driver bits have Custom Alloy76 for a customized steel and heat treatment per tip type to extend the life of your driver bits, providing up to 50X life versus other impact driver bits on the market. Our Milwaukee Shockwave driver bits are built to provide you with extreme durability for the most demanding applications."