Explanatory notes
… stones (natural, synthetic or reconstructed) on a support of base metal, metal carbide or cermet; or … for their use, they are fitted with base plates, stands, supporting frames, etc., for standing on the floor, bench, …Legal note
… stones (natural, synthetic or reconstructed) on a support of base metal, metal carbide or cermet; or (d) Abrasive materials on a support of base metal, provided that the articles have …