The DEWALT 14-Piece twist drill bit set has a black Oxide coated finish for greater wear resistance. The helix is 31° which minimizes the over aggressiveness of a true parabolic flute. The parabolic flute design improves chip Ejection in metal and wood drilling applications.
- 135° 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° which minimizes the over aggressiveness of a true parabolic flute