... by slider transmission. 3)long using Specifications1.Double shaft polishing dinner ware/stainless steel /cutlery/spoon/ 2.Easy adjustment ... metal,non-ferrous metal,nonmetallic work piece, copper plate, aluminium plate.Polishing the rags, edge, oxide skin, rusts generated at ... ensure the polishing quality as the size of work piece, Only for metal products. For thin stainless steel, aluminium, copper ...