Cobalt Jobber Drills, Over 1/2" Shank

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.