Description: Quality Material: Crafted from aluminum alloy, this wheel hub offers exceptional strength and durability, ensuring it remains deformation free even after prolonged use. Its sturdy construction make it ideal for challenging environments like rain and mudVersatile Size Compatibility: This wheel hub is suitable for matching inner tubes with outer tires, guaranteeing a smooth ride every timeLightweight Design: The aluminum alloy structure is significantly lighter than traditional steel hubs, reducing the overall weight of your folding bike or scooter and enhancing maneuverability for a great riding experienceEnhanced Load Capacity: Engineered to withstand higher loads and impacts, this wheel hub is suitable for commuting as well as navigating complex road conditions with easeProduct Specifications & Packaging: With a diameter of approximately 21.7 cm/8.54 inch, this package includes a aluminum alloy wheel hub ready to upgrade your bike's performance Specification: Material: Aluminum Alloy Size Chart: Diameter:21.7 cm/8.54 inch Package Includes: 1wheel Hub Note: Please allow slightly errors due to manual measurement and different monitors.