DEWALT DW1627 7/8-Inch Black Oxide 1/2-Inch Reduced Shank Twist Drill Bit

Product Description 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 true parabolic flute. From the Manufacturer Reduced shank black oxide drill bits from DeWalt are ideal for drilling holes larger than 1/2-inch with a standard 1/2-inch drill. These bits can be used in general applications including drilling in non-ferrous metal, wood, and plastic. Typically, the larger sizes are used in metal.