4 GRINDING, ABRADING, POLISHING, CUTTING-OFF, AND KNIFE SHARPENING WHEELS; CYLINDER HONING STONES, RUBBING BRICKS, MARBLE FINISHING STONES, TERRAZZO RUBBING STONES, OIL STONES, ABRASIVE STICKS, PENCILS, STONES, ABRASIVE-COATED SHEET MATERIAL AND MOUNTED ABRASIVE POINTS