Drill Bit, Black and Gold High Speed Steel, 135 Degree Split Point, Jobber Length, 13/64", Bulk IRWIN offers a complete line of Metal Twist Drill Bits, including Black Oxide, Turbo Point, Titanium Nitride, and Cobalt Drill Bits.. IRWIN Black & Gold drill bits feature a 135 split point tip for accurate drilling without a center punch. Laser-etched markings for easy identification. High Speed Steel features a black shank and gold flute. Heavy-duty web construction for strength and durability. 135 split point begins drilling immediately, minimizing bit "walk". 3-Flatted shank on 3/16" and above for better chuck grip. Provides accurate drilling without a center punch.