1. Durable Material: Constructed from CNC-machined 6061 aluminum alloy, this component offers a robust yet lightweight solution for your bicycle, ensuring long-lasting performance. 2. Smooth Operation: Features sealed cartridge bearings for effortless functionality and extended durability, minimizing the need for maintenance. 3. Perfect Compatibility: Designed to fit head tubes with a 30 mm inner diameter, 24.5 mm threaded forks, and 22.2 mm cores, offering versatile compatibility for various bicycle setups. 4. Dustproof and Rust-resistant: Equipped with a rubber-sealed bearing to block dust and prevent rust, enhancing the longevity of the product. Use Scenarios: - Ideal for upgrading your mountain bike, ensuring a reliable and smooth ride on rugged terrains. - Perfect for road bicycle enthusiasts looking to enhance performance without adding unnecessary weight. - Great for bike repair shops aiming to provide their customers with high-quality, dependable bicycle components.