No matter how carefully you pack your truck's tool box, you can pretty much guarantee that you'll get to the job site and find out that you've packed everything except the bit or driver you need to tackle the project. UNLESS you've packed this 70-pc. set of pro-grade bits and drivers. The Ultra-Lok 1⁄4" hex shanks are compatible with all quick-change connector systems – ideal for use with battery or electric drills/drivers and impact drivers. Hardened steel bits have a rust-resisting black-oxide coating. Set includes all popular sizes of nut drivers, spade bits, drill bits, insert bits, adapters and maximum magnetic extension. Everything is neatly organized in a high-impact plastic organizer that'll save you a bunch of trips back to the shop.