The DEWALT® #10 countersink with 3/64 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.