Cobalt Jobber Drills, Fractional, Drill America

Drill America M42 Cobalt Jobber Length Drill Bits are engineered for maximum performance in hardened steel, stainless steel, and other difficult alloys. Manufactured from premium M42 cobalt steel containing 8% cobalt, they deliver superior hardness, exceptional red heat resistance, and extended tool life in demanding drilling applications. The precision 135° split point ensures fast penetration, reduced walking, and accurate hole placement in tough metals.