Drillco Nitro HD 17/64″ Drill Bit

Manufactured from a premium grade of M-7N molybdenum high speed steel\r\n \tThe Nitro Heavy-Duty 135\u00b0 Split Point Drill with a Nitride surface treatment that gives a hard protective layer to the drill (increases hardness without increasing brittleness) which is measurably harder than high speed steel\r\n \tBody and clearance are gold and black surface treated for maximum lubricity\r\n \tRecommended for use in stainless steel and other hard metal drilling