7 Drilling machines and parts therefor; electric motors for machines; electric motors for machines with a digital servo drive controller; grinding machines for metal, wood, ceramics and plastics processing; industrial robots; machines and machine tools for the cutting and forming of materials; polishing machines for use in grinding and polishing metal, wood, ceramics and plastics; power tool parts, namely, collets; power-operated grinding wheels; power-operated polishers; power-operated tools, namely, grinders; power-operated tools, namely, buffers