... both sides of the screens can be used. Sanding Surface of woodworking, plaster metal, plastic, enamel ... Screen Disc size: 13",14",15",16",17",18",19",20",21",22",23",24"Sanding Screen ... 6, 36 Length: 25yards, 50yards, 100yards. Packing: Sanding sheet or disc: each 5 10 sheets or discs one Shrink packing ... , then carton packing; Sanding roll: each ...