Features: High strength aluminum alloys component, light weight, ensuring cycling stability and durability. Quick dismantling rod, convenient installation and disassembly. Fashionable and versatiles, suitable for various car models. Suitable for mountain bike enthusiasts, cyclists, and users who need to replace or upgraded their flower drums. Suitable for various mountain cycling environment, and outdoor. Specifications: Color:Five Elections Dimension:252mm/9.9in 210mm/8.26in Component:Aluminum Alloys Package Includes: 2pcs Mountain Bicycles Hubs note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.