B Nitro Heavy Duty Jobber Drill Bits 12 pack B5/8-11 x 2 3/4 21/64 Aircraft Extension Drill Bit

21/64 Aircraft Extension Drill Bit 12" Length Cobalt - Pack of 3

Part # MS51967-5

Part #43137C150SS-100

Part #137S14T300SS-100

Part # 440N516

B Nitro Heavy Duty Jobber Drill Bits 12 pack B5/8-11 x 2 3/4 21/64 Aircraft Extension Drill BitNeed a large quantity? Request bulk pricing here. B 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