Attractive White Tubes are great for storing or shipping posters, blueprints etc. 3-ply, spiral wound construction for strength; White end caps included snap into place to hold contents secure; Caps will not pop off during shipment; Tubes are reusable and recyclable; Sizes listed are usable space. Actual tube lengths are longer; Additional 2” End Caps. This product is equivalent to part number: S-358. Sold in a quantity of 50 per case.