The CRAFTSMAN® 140-piece impact drill/driver bit set will extend your handyman capabilities tenfold. It contains four ranges of drill bits for a variety of applications. You’ll finish construction and home improvement work, like installing fixtures around your house, upgrading furniture and cabinets, fixing damages in the interior rooms, refurbishing your garage and outdoor space, and more. The bit sets for impact driver are made of shock-resistant tool steel to resist a high level of impact and torque during tough applications. The bit tips are all CNC-machined to ensure a snug fit and reduce cam-out. Everything comes in a hard-type case for easy storage.