Pilot for 1 DOC Copperhead™ Annular Cutters. Pilot for 1 D.O.C. Copperhead Cutters. Pilot for 1 Hougen Copperhead Carbide Tip Annular Cutters. Pilots serve three functions: 1) Line up the cutter with the center of the hole 2) Allow coolant to flow to the cutting teeth 3) Eject the slug at the end of the Cut. Made in USA.
