DEWALT DW1620 9/16-Inch Black Oxide 1/2-Inch Shank Reduced Shank Twist Drill Bit
Black oxide coated for greater wear resistance; split point drills on contact and prevents walking. Parabolic flute design improves chip Ejection in metal and wood drilling applications. Helix is 31 degrees which minimizes the over aggressiveness of a true parabolic flute.