DeWALT DW1606 Drill Bit, Spiral Flute, 2.83 in L Flute, Round Shank, 1/4 in Dia x 9.17 in L Shank

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 deg which minimizes the over aggressiveness of a true parabolic flute.