... quality 3,large gear polisher 4,for concrete,stone artificial stone surface polisher is not only grinding and polishing ... , but also for repairing, grinding, polishing, crystallizing millstones.artificial stone surface polisher HWG 70 has the quickest motor speed ... , marble, granite, terrazzo with various grit of diamond metal, resin bond.3, Remove painting, coating, epoxy, urethane, glue, polyurethane ...