Heavy Duty Shipping Tubes: Holds up to 65 lbs (pounds), 32 lb (pound) edge crush tested, certified and tested to meet all single wall box storage, mailing, and freight requirements Optimal Packaging Solution and Supplies: Designed to ship or store documents, artwork, posters, blueprints, graphics, and charts Mailing Tubes with Caps: Made of unprinted cardboard, single-layer corrugated boxes are lightweight and sturdy 100% Recyclable and Reusable: Simple materials, excellent performance; Made in the USA 50 Pack Bulk Box Value Bundle: Manufactured from Aviditi and brand new