This set of four Hex Shank Drill and Countersink Set (1/4" size) fits all standard and quick-change drives. Drills the screw hole (including no thread for the top portion of the screw) and cuts the countersink for the flat head, all in one motion. Will also counterbore.
Fits screw sizes #6, #8, #10 & #12. Comes only as a set of 4.
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