H Nitro Heavy Duty Jobber Drill Bits 12 pack 8 x 1/2 Heavy duty construction for portable

Heavy duty construction for portable or machine drilling in high tensile strength alloy steels

Part #3522510006SS-50

21/64 Nitro Heavy Duty Jobber Drills - Pack of 6

Part # MS90725-64

H Nitro Heavy Duty Jobber Drill Bits 12 pack 8 x 1/2 Heavy duty construction for portableNeed a large quantity? Request bulk pricing here. H Nitro Heavy Duty Jobber Drills Pack of 12 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