Metal hub designed for durability and reliable performance. Key benefits - Material and durability: High strength metal construction built to withstand the demands of cycling and provide long lasting durability for bicycle wheel hub axles and bicycle wheel hubs. - 32 hole configuration: The 32 hole design provides increased strength and stability, making it suitable for challenging mountain biking conditions. - Optimized for compatibility: Works seamlessly with standard bike systems, delivering efficient braking performance and compatibility with your bike and related parts such as balance bike replacement parts and bike shafts. - System compatibility: Specifically designed for systems, this hub supports optimal braking performance and compatibility with your existing setup including bike axle replacement and rear wheel axle hub. Use scenarios - Mountain biking upgrades: Install this hub on a mountain bike rear wheel to enhance braking performance and durability on rugged trails. - Wheel rebuilds and replacements: Replace a worn rear hub on a bike using a 32-hole rim with a compatible rear axle setup to restore reliability. - Maintenance and parts stocking: Keep as a durable, compatible hub option for a shop or multi-bike household, suitable for replacement parts including balance bikes and bike shafts.