Master Mechanic 1/4 In. Hex Shank Quick-Change Countersink Drill Set (4-Piece)

Master Mechanic, Quick Change, Countersink Set, Drill, Countersink Or Counterbore In Wood & Plastic, 1/4 In. Hex Shank For Quick Change Adapters, Includes 4 Power Groove Countersinks: #6-3/32 In., #8-7/64 In., #10-1/8 In. #12-1/8 In. & Allen Wrench For Depth Adjustment