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 tru e parabolic flute.
Dewalt Silver and Deming Drill Bit, General Purpose, 9/16 in Diameter, 6 in Overall Length, 2 Flutes, Parabolic Flute, 3 in Flute Length, 3/8 in Shank, Reduced Shank, 135 deg Point, Split Point, High Speed Steel, Black Oxide, Applicable Materials: Wood, Metal, Plastic, Fiberglass