7 machine tools for cutting, grinding, and polishing metals, wood, glass, stone, ceramic, plastics, and other materials; [ vibrating discs, polishers, ] grinding discs, cutting-off wheels, diamond blades, grindstones, grinding wheels and rollers, [ and grinding pins, namely, grinding mounted points, ] all being parts of power-operated machine tools; [ abrasive flap wheels, abrasive lamellar grinding wheels, abrasive fan-type grinding wheels, abrasive flap discs, abrasive lamellar discs, all being parts of power-operated grinders; ] parts for machine tools for grinding, namely, [ support plates for grinding discs, contact wheels for abrasive belts, and expanders for mounting grinding wheels and discs; ] abrasive disks for power-operated grinders; abrasive wheels for power-operated grinders; power-operated abrasive wheels, [ abrasive belts and discs, discs of abrasive fiber, abrasive paper, abrasive cloth, ] and abrasive non-woven material, all being parts for power-operated grinders