Sponge polishing balls size: according to customer requirements of production. Features: (1) make polished goods clean bright: (2) Minor scratches can be polished to reach new effect . (3) to use with polishing liquid, paste, powder to reach better effect. used: (1) used glass polishing and Frp polishing; (2) to polish stainless steel, home appliances ,plastic ; (3)to polish furniture, car , automobile maintenance, beauty.