Quality Products, These high-quality tubes are spirally wound and manufactured so they will not bend or damage products. Super Tight Caps, they wont fall or tube wont accidentally open. From the beginning to the end, these heavy-duty kraft mailing tubes help keep your rolled materials safe during shipment, Durable and dependable mailing tubes are one of the strongest in the industry, Usable dimensions 2" x 15.4", Tube external dimensions 2 1/4" x 16 1/2"