features and benefits:
- 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
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.