Description:1. 6063 aluminum for high strength, weld-ability, corrosion resistance and long-lasting durability.2. It can be processed according to the length you need, and can be welded with the right equipment.3. The interior is smooth with no seam and is available in an extruded structural or a drawn seamless aluminum round tube for precision applications.4. Commonly used in the industrial, ships, home furnishing and other industries. Great for custom fabrication projects such as DIY handmade, frames, boat building, modelers, crafts, gardening products, shopfitting, etc. Specification:Material: 6063 AluminumInner Diameter: 8mm / 0.31-inchOuter Diameter: 13mm / 0.51-inchTotal Length: 300mm / 11.