Abrasive disks for power-operated grinders; Power-operated abrasive wheels; Abrasive disks for power-operated sanders; Abrasive belts for power-operated sanders; Abrasive wheels for power-operated grinders; Flap discs for power-operated grinders; Grinding tools for grinding machines; Grinders being power tools; Power-operated polishers; Polishing system for use in single-head machines comprising grinding and polishing discs for stone profiling and edges; Polishing discs for automated wet-poli...