SYOSI Countersink Drill Bit Set - M35 Cobalt 5 Pieces 1/4'' 3/8'' 1/2'' 5/8'' 3/4''

M35 HSS Cobalt Layered Drill Bits It is excellent prolong life, achieve smoother drilling

Surface Burgundy oxide treatment and a five-flute design removes chips faster and dills smoother and ensures an extended life.

These countersink drill bits work hard the profound processing, achieve exact countersink holes and allows the screw heads to be flush and even with the surface of the material being utilized.