... produce polychrome and durable PVC document binding cover to protect your documents.Common typeRigid PVC materialColor: Transparent, yellow, red, blue and greenSize: ... has scuttle, back cover is plainColor: White, black, red and blueSize: A4, A3Package: 25 couple/wrap, 50 couple/wrap, ... , the numbers 1-12, colors combination and so on.Color: White, black, red and blueSize: A4, A3Package: 5 pieces/wrap ...