Metal working machine tools, machine tool holders, chucks for power tools, namely, reamers, drill bits, grinders, brush tools; machine parts, namely, workpiece holders and machine tables; power-operated grinding wheels; brushes for rotary finishing machines; power-operated tools, namely power-operated brushing tools, grinders, brush tools, star tools, namely star-shaped cutting tools for shape cutting, polishing and edge working, spiral tools and hollow brush tools