Drillco® Nitro Construction Reamer

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Manufactured from a premium grade of m-7N molybdenum high speed steel Has a Ferritic Nitro Carburizing surface treatment which gives a hard protective layer to the reamer This incr eases hardness (Rc 75-80) without increasing brittleness which is measurably harder than high speed steel Body and clearance are gold and black surface treated for maximum lubricity Flute Style Spiral Material High Speed Steel Shank Type Straight Show more