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Alfa USA's Cobalt M42 Left hand Jobber Length drill bits are manufactured from heat resistant steel to NAS 907, Type J standards. Cobalt M42 high speed steel maintains cutting ability at temperatures exceeding 1000 degrees F. This heat resistance enables use in harder, high-tensile strength steels like stainless steel, titanium, armor plate, Inconel and other difficult-to-machine materials. Left hand jobber drills are designed for use in machine application where spindles rotate counter-clockwise. The left hand spindle is excellent for use with screw extractors and other general purpose construction.
Manufactured from heat-resistant cobalt M42 high-speed steel, these drills maintain their cutting ability at temperatures exceeding 1000 degrees F
Left hand helix for screw extractions or other counter-clockwise drilling
5/64"(0.0781") Fractional Drill Bit- 12 per Envelope
135 Degree Split Point Left Hand Spiral Straight Shank
Type J Cobalt Bit made in the USA to NAS 907 standards