Size--Countersink drill bit set for wood with tapered drill bit HSS M2, 4 Flute cutter #45 Carbon Steel tapered countersink set featuring 5 sizes drill bits with countersink #4 (7/64"), #6 (9/64"), #8 (11/64"), #10 (3/16"), #12 (7/32") Adjustable wood countersink. Hex shank compatible with 1/4 inch standard Quick Change chuck including impact drills
Universal Use--Universal 1/4 inch hex shank prevents slipping in standard chucks and is compatible with all 1/4 inch quick-change chucks
Counter Bore--Wood drill bit set with adjustable counter bore, chamfer angle 82 degree, cuts and clears chips quicker for fast, smooth countersinking tapered holes for screws.
Adjustable--Quality built depth adjustable counter bore that attaches to flats on shank with 2 hex screws for a secure fit and can be adjusted for controlled pilot hole depth, which makes it easy to adjust the overall bit length and thus control the depth when drilling.
Notice--Please read the operating rules carefully. Pay attention to good safety precautions.