The Milwaukee Shockwave 36 Piece Impact Driver Bit Set is engineered to be the Most Durable， Best Fitting driver bits for the most demanding applications. Each impact driver bit features Milwaukee Wear Guard Tip that delivers increased wear resistance which protects the fit over the life of the bit. Milwaukee Shockwave driver bits have optimized Shockzones for each tip type and length of the driver bit to absorb peak torque and prevent breaking. The impact driver bits are made from Custom Alloy 76 steel， heat treated based on tip type to extend the life of the bits， providing up to 50X life vs. competitive impact driver bits. Milwaukee Shockwave driver bits are built to deliver extreme durability for the most demanding jobsite applications.