[ Abrasive disks for power-operated grinders; ] Bits for power drills; [ Blades for power saws; ] Chisels for machines; [ Drill chucks for power drills; Machine parts, namely, fasteners for power-operated sharpening stones, namely, grindstone mounts; Polishing system for use in single-head machines comprising grinding and polishing discs for stone profiling and edges; ] Power drill bit extensions; [ Power tools, namely, burrs; Power tools, namely, drills, routers, circular saws; Precision mac...