Sanding surface of woodworking Specification :13", 14", 15", 16", 17", 18", 19", 20", 21", ... carton or customer made Sanding surface of woodworking, plaster, metal, plastic, enamel and remove rusty spots of metal materials and making grinding and ... design resists clogging and both sides coated with abrasive grains of the screen. The grinding and cutting efficiency and durability is ...