12 Pcs. Drillco Cutting Tools Made in USA No. 1 (0.2280") Nitro Heavy-Duty 135 Deg. Split Point Series 480N Black & Gold High Speed Steel (HSS) Jobber Length Drills
Heavy-Duty 135° Split Point drill with Nitride surface treatment gives a hard, protective layer to the drill (increases hardness without increasing brittleness), which is measurably harder than High Speed Steel (HSS). Body and clearance are black and gold surface treated for maximum lubricity. Recommended for use in stainless steel and other hard metal drilling.
|Size||Decimal||Flute Length||Overall Length||EDP#|