The DeWalt® DW1608 5/16 x 12 in black oxide drill bit has a helix of 31 deg which minimizes the over aggressiveness of a true parabolic flute. With a black oxide coating and a split point, this is a drill bit with great wear resistance that won't walk across your project.
DeWALT® Extended Length Drill, 5/16 in Drill - Fraction, 0.3125 in Drill - Decimal Inch, 12 in Overall Length, 3.26 in Cutting Depth, Regular Spiral Flute, 3.26 in Flute Length, 5/16 in Shank, Straight Shank, 135 deg Point, Split Point, Right Hand Cutting Direction, HSS, Black Oxide, Applicable Materials: Stainless Steel, Ferrous and Non-Ferrous Metal
| Cutting Depth | : | 3.26 in |
| Cutting Direction | : | Right Hand |
| Finish | : | Black Oxide |
| Flute Length | : | 3.26 in |
| Flute Type | : | Regular Spiral |
| Point Angle | : | 135 deg |
| Point Type | : | Split |
| Shank Size | : | 5/16 in |
| Shank Type | : | Straight |
| Drill Size - Fraction | : | 5/16 in |
| Drill Size - Decimal Inch | : | 0.3125 in |
| Overall Length | : | 12 in |
| Material | : | HSS |
| Applicable Materials | : | Stainless Steel, Ferrous and Non-Ferrous Metal |