6, 8, And 10 Countersink Drill Bits Are Included In The Dewalt Dw2535 Set. Product Description 3 Piece, Countersink Set, Rapid Load System, Durable Rubber Finger Grips For Comfortable Use, Impact Rust Resistant Nickel Plated Nose, Stainless Steel Interior Parts Pressure Activated Ball Groove System For Rapid Loading Strong Retention, Provides Quick Easy Accessory Changes Without Rechucking, Accessories Have Hex Shank Locking System To Prevent Slipping, Holder Fits All Brands Of 3/8" 1/2" Cordless Corded Drills. From the Manufacturer DEWALT DW2535 3 Piece #6, #8, and #9 Countersink Assortment The product is 3PC Countersink Set Easy and simple use kit The product is manufactured in China Drill, countersink and counterbore in one step Four cutter countersink and tapered drill bit provide superior speed and ideal finish Replacement tapered bits offered