Description: Brass for high strength, weld-ability, lightweight, and long-lasting durability. Finish with passivation, which is oxidation resistance and corrosion resistance. The interior is smooth without a seam and is available in an extruded structural or a drawn seamless brass round tube for precision applications. Great for making different kinds of DIY crafts, such as models, handmade wall hanging, plant holders and more. Specifications: Material: Brass Outer Diameter: 10mm / 0.39-inch Wall Thickness: 0.5mm / 0.02-inch Total Length: 30mm / 1.18-inch Package Contents:16 x Brass Round Tubes