Milwaukee SHOCKWAVE Impact Duty 70 Piece Driver Bit Set with PACKOUT 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 & length of driver bit in the set to absorb peak torque & prevent breaking. Milwaukee driver bits are made from CUSTOM ALLOY76 steel & 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. The Milwaukee PACKOUT Modular Storage System allows you to easily transport & organize your tools and accessories. The Milwaukee SHOCKWAVE Impact Duty Carbide Hammer Drill Bits use sharpened carbide to deliver up to 5x longer life in concrete and up to 2x faster drilling into masonry material. Engineered with a precision ground tip, these bits deliver faster starts and less walking in concrete, brick and block. The wide flute design removes dust faster, reducing heat and delivering more holes per charge. Equipped with a 1/4 in. Hex Shank, the Milwaukee SHOCKWAVE Impact Duty Carbide Hammer Drill Bits are the ideal solution for drilling in masonry materials with both impacts & hammer drills/drivers.