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 and length of driver bit in the set to absorb peak torque and prevent breaking. Milwaukee 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. The Milwaukee 20-Piece Multi-Tool Blade Variety Pack offers users multiple accessories for various applications. The Titanium Enhanced Bi-Metal Blades use premium high-speed steel and last up to 15X longer than standard high carbon steel blades. This multi-tool blade set includes bi-metal blades for both soft metals and multi-material applications. The Japanese Tooth blade features a PRO-CURVE for fast, clean cuts and greater control in hardwood, clean wood, PVC, and drywall. The included oscillating multi-tool wood blades have aggressive, precision ground teeth for fast cuts in wood, drywall, and PVC. The 3-1/2 in. Triangle Sanding Pad comes with sandpaper in 60 and 120 grit sizes.