Buy high-quality Cardboard Mailing Tubes at the lowest prices. We have mailing tubes in different sizes to meet all your requirements – These tubes can be used by school kids to carry & protect A4 & A3 size papers or to send documents via post without creasing or crumpling. All our mailing tubes are manufactured from high quality materials that gives the tubes utmost strength to bear the impact during shipment. This is a pack of 5 Mailing tubes with 10 Air-Tight Caps.