Double-End Black Oxide Coated High Speed Steel Drill Bit 1/8" Size. 5/8" Twist Length. 2" Overall Length. Bulk. 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 Ideal for use in stationary drills 135 degree split point ensures a true start and eliminates bit walking