The MILWAUKEE® SHOCKWAVE Impact Duty™ Driver Bit 55-Piece Set (48-32-4096) is engineered to be the Most Durable, Best Fitting driver bits on the market. The WEAR GUARD TIP™ delivers increased wear resistance which protects the impact bit's fit over the life of the bit. The SHOCK ZONE™ is optimized for each tip type and length of driver bit in the set to absorb peak torque and prevent breaking. The driver bits are made from CUSTOM ALLOY76™ steel and a proprietary heat treatment process to extend bit life, providing up to 50X life versus other impact driver bits on the market. The Milwaukee® SHOCKWAVE Impact Duty™ driver bits are built to provide users with extreme durability for the most demanding applications. The set is organized in a customizable accessory case designed for use in PACKOUT™.