Gear cutting and finishing machines; Power-operated potters' wheels; Power-operated grinding wheels; Cutting machines for metalworking; Machine wheels; Abrasive wheels for power-operated grinders; Power-operated abrasive wheels; Power tool accessories, namely, cutting guides; Cutting devices being parts of machines; Machine parts namely, millstones; Power-operated grinding wheels for optical lens grinding; Kits comprised of sandpaper sheets configured to fit power-operated sanders; Sanding pa...