Cyclone HSS Premium Grade Annular Cutter, 13 16 in dia x 2 in Depth, 3 4 in Weldon Shank, Includes Pilot Pin ORS NASCO For cleaning welding tip and For cleaning welding tip and a variety of other fuel orifices and injectors Knurled aluminum handle Removable cap Designed primarily to work in conjunction with the Tweco Roto Ground device May also be used for other high amperage grounding applications Clamp is quickly attached or moved from one rotating weldment or fixture to the other without removing the Roto Ground from it Saves welding downtime Evolution standard geometry is sufficient for most drilling applications Manufactured specifically to maximize hole accuracy while minimizing cutter vibration and extending annular cutter life Using this standard geometry enhances accuracy and saves time This allows for a single ejection of slugs when drilling through stacked material