Master Mechanic 158860 QC Countersink Set
Master Mechanic, Quick Change Countersink Set, Drill, Countersink Or Counterbore In Wood, Includes Hex Wrench For Set Screws, Fits All Brands, Speed Shank Eliminates Tool From Slipping In Drill Chuck, Includes 4 Power Groove Countersinks #6-3/32", #8-7/64", #10-1/8" #12-1/8" & A Hex Wrench, Carded.