Diameter 28mm standard size 1.2mm thickness anodized aluminum alloy tube for Karakuri system.The aluminum tube with a thickness of 1.2mm can provide the user with sufficient bearing capacity. Compared with the traditional lean pipe, the aluminum pipe has less resin coating. Because the supporting connectors are also aluminum materials, it is easy to recycle when doing waste treatment. Moreover, the surface of the aluminum pipe is treated with acid resistant aluminum, and it can be kept beautiful for a long time without maintenance. At the same time, the aluminum tube surface is also coated to reduce oxidation and keep the factory clean. Features 1. WJ-LEANs aluminum tube use international standard size, can be used in any international standard parts. 2. Easy assembly, only needs a screwdriver to complete the assembly. The material is environmentally friendly and recyclable. 3. Aluminum alloy surface is oxidized, the surface is smooth without burrs, and the overall system is beautiful and reasonable after assembly. 4.Product diversification design, DIY customized production, can meet the needs of different enterprises.