Drill Bit, High Speed Steel, Black Oxide Finish, Jobber Length, 23/64″, Bulk IRWIN offers a complete line of Metal Twist Drill Bits, including Black Oxide, Turbo Point, Titanium Nitride, and Cobalt Drill Bits.. Black oxide coating for added corrosion resistance and added lubricity. Bit is constructed of M-2 high speed steel for the best combination of strength, heat resistance, and wear resistance. For general use in wood, metal, and plastic. Black oxide coating resists corrosion. 135 degree split point ensures a true start and eliminates bit walking.
