7 Polishing, cutting, grinding, and buffing machines for working metals, wood, glass, plastics and compounds thereof, and for working of carbon and ceramic materials; machine tools for polishing, cutting, buffing, grinding, and abrasive tools for the aforementioned machines; tool bits for machines; power-operated tools for cutting, buffing, grinding, polishing, and abrasion; bodies for power-operated cutting, buffing, abrasive, grinding, and polishing tools in the form of grains, blocks, disks, wheels, rings, belts, stones, pads, segments, as well as segmented blocks, segmented disks, segmented wheels, segmented rings, segmented belts, segmented stones; power-operated disks, rings, stones, wheels, blocks, and pads for polishing, grinding, buffing, and cutting; parts and components therefor