High-Speed Steel Drill Bit, 9/16-In.

9/16" high speed split point drill bit, 1/2" shank, helix is 31 degree which minimizes the over aggressiveness of a true parabolic flute, 135 degree split point for quick start & no walk applications, parabolic flute design improves chip ejection in metal & wood drilling applications, back oxide coating for greater resistance to wear, industrial grade steel, for drilling in metal, wood & plastic.