Abrasive belts for power-operated sanders; Belt sanding machines; Bits for power drills; Blades for power tools; Drill chucks for power drills; Drilling machines and parts therefor; Floor polishers; Floor polishing machines; Grinding tools for grinding machines; Pads for floor polishing machines; Polishing machines for use in grinding and polishing metal, wood, ceramics and plastics; Power-operated angle grinders; Power-operated polishers