Durable and long lasting performance This mountain road bike headset is built for durability and longlasting performance under demanding cycling conditions. It is designed to withstand the rigors of intense riding. Precision craftsmanship The headset uses a forged CNCmachined shell and an aluminum alloy body. It features an anodized finish for added protection and a clean, professional appearance. Smooth and silent riding Equipped with two stainless steel sealed bearings, one upper and one lower, this headset delivers smooth rotation and quiet operation. The bearings provide robust support and reliable rotation with minimal friction. Compatibility Designed for bikes with an inner diameter head tube frame (both upper and lower) and a 6mm outer diameter upper tube (standard). It provides a precise, reliable fit for compatible bikes and performance. Use scenarios Replacing a worn headset on a mountain road bike used for rugged trail riding to restore steering stability and reduce play. Upgrading an older bike for longdistance rides across mixed terrain, where smooth, quiet operation and durable components are beneficial. Installing on a bike with an innerdiameter head tube and standard 6mm outer diameter upper tube to maintain proper alignment and reliable handling.