1-3/8" X 1" nACo Nano-Composite Coated Blue Annular Cutter nACo Nano-Composite Blue coating increases tool life up to 30% compared to traditional HSS annular cutters Cuts difficult materials, including steel, cast iron, heated and stainless steels.3/4" Weldon Shank fits most magnetic drill presses. Also called magnetic drills or mag drills.
The 135 split point is self-centering and reduces thrust. J x6" Cobalt Aircraft Extension Drill Bit Sizes smaller than 1/16” or #52, and larger than 1/2” have the 118° standard point..