Dewalt Accessories DW2535 3-Piece Drill-Countersink Set: * Drill,-countersink and-counter bore in one step * Four-cutter-countersink and tapered drill bit, provide superior speed and finish * Adjustable for different screw lengths * 3-pc set includes 9/64" for No 6 screws, 11/64" for No 8 screws and 3/16" for 10 screws, * Carded