Pilot Pin, For 2" Cut D Carbide CutterMfr #: 63134998102 Pilot pin helps locate center of hole location As the pilot pin retracts into the cutter during the cut it introduces lubrication to the cutting teeth and reduces heat gain in slug Pilot pin helps eject the slug after the cutting operation is complete Jancy pilot pins are made of hardened M 2 tool steel providing long life and can be used over the life of several cutters