#45 x 2.1/8 IN 480N Series Heavy Duty Jobber Drill Bit
Manufactured from a premium grade of M-7N molybdenum high speed steel.˜ the Nitro Heavy Duty 135 degree Split Point drill with a Nitride surface treatment that give a hard protective layer to the drill (increases hardness without increasing brittleness) which is measurably harder than high speed steel.˜ Body and clearance are gold and black surface treated for maximum lubricity.˜ Recommended for use in stainless steel and other hard metal drilling.
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