DEWALT DW2701 #8 Drill Flip Drive Complete Unit allows for quick and easy changes between drilling and driving, letting the user finish jobs faster. These black oxide split-point drill bits start on contact, and have a contoured finger grip for easy ergonomic use. These drive units feature quick change mechanism for easy one-step loading and are easy to push forward for one-handed release. The DW2701 have a 5/16 in. shank for added durability and is one integral unit that keeps everything together and no lost parts. The Multi-Cutter Countersinks for superior finish.