Hardened, alloy steel straight or tapered Snappy Countersink bits will drill the pilot hole and countersink or counterbore in one operation. The large 1/4" hardened set screw allows you to easily adjust the length of the bit for correct pilot hole depth. The 82° countersink angle sets screw heads flush to the surface or, if you prefer, counterbore for using plugs. They have standard 1/4" hex shanks which fit all quick change chucks or standard drills. USA

5-Piece Straight Bit Set:
Includes screw sizes #4 (5/64"), #6 (3/32"), #8 (7/64"), #10 (1/8"), and #12 (9/64").

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