Features: The 36 inch long aluminum tubing is light but strong, easy to carry, safe to use due to no burrs on its surface, suitable for daily uses, like DIY aircraft, frames, models, antennas, gardening products, boat building and so on. The aluminum round tube is long and thin, suitable for you to store it in the corner for safety, and you can bundle these aluminum tubes together for better storage, which would not take up too much space. Specifications: Material: aluminum Color: silver Size: Total length: about 36 inches/ 91 cm Outer diameter: about 0.35 inch/ 9 mm Inner diameter: about 0.28 inch/ 7 mm Thickness: about 0.08 inch/ 2 mm Package includes: 12 x Aluminum round tube Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays.