http://goo.gl/2BfLLK <br />These white mailing tubes provide a clean professional appearance for shipping blueprints, graphs, posters, important documents, etc. Plastic end caps are friction-fit to stay on during mailing. The flat cap surface is ideal for writing. These rigid 3-ply spiral wound construction mailing tubes resist folding or bending and can be reused. Sizes listed below are USABLE dimensions (amount of space AFTER end caps are inserted).
