The SHOCKWAVE 74 Piece Impact Drill & Drive Set feature bits engineered to be the Most Durable, Best Fitting driver bits on the market. Each impact drill and driver bit features Wear Guard Tip that delivers increased wear resistance which protects the fit over the life of the bit. The driver bits in this SHOCKWAVE bit set 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 Alloy76 steel, heat treated based on tip type to extend the life of driver bits, providing you with 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.