DEWALT DW1604 3/16-Inch by 12-Inch Extra Long Black Oxide Drill Bit
- 135 degree split point drills on contact and prevents walking.
- Parabolic flute design improves chip ejection in metal and wood drilling applications.
- Black oxide coated for greater wear resistance.
- Helix is 31 degrees which minimizes the over aggressiveness of a true parabolic flute.