Alvin Black Knight Storage Tube 4-1/4 Inch Inside Diameter
Made of durable black plastic, tube is water-resistant. Ideal for storage, protection, and transport of documents, artwork, prints, posters, and more. Expands from 30" to 45" in 14 locking 1" increments with a 4-1/4" inside diameter. Includes removable, adjustable shoulder strap.