Drillco Cutting Tools 400N Heavy Duty Nitro Drill Bits (Multiple Sizes Available)

Features 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. Additional Information Sizes: Fractional Material: High Speed Steel Finish/Coating: Black & Gold Cat: Drills