The DEWALT #6 Countersink with 9/64 In. Drill Bit is part of a line of precision countersinks used for settling screws flush or better within a range of materials. This four-cutter countersink with a tapered drill bit provides maximum speed and ideal finish, allowing users to drill, countersink, and counterbore in one step, which saves time and eliminates mistakes on important jobs. DEWALT products are extensively tested on real world jobsites to ensure durability, but DEWALT also understands the importance of good replacement tools. With replacement tapered bits available, you can be confident that your countersink will last even longer.