Features1ALUMINUM ALLOY MATERIAL: It is made of high strength aluminum alloy material, which makes it strong and durable, and has the characteristics of anti oxidation, impact resistance and no deformation. 2ACCURATE CUTTING TECHNOLOGY: Made with accurate cutting technology, the surface is turned, flat and smooth. Six nail flange design makes the disc brake installation more stable. 3HIGH SPEED AND QUIET: This hub is capable of overloading for a long time and features high speed, more lubrication and wear proof, and is capable of quiet operation. 4ANODIC COLORING PROCESS: The body adopts anodic coloring process, which can not only increase the wear resistance and hardness of the hub, but also better protect the metal surface. 5EASY INSTALLATION: Our package includes two bike quick release skewer axles for hassle free installation and swift disassembly. These hubs are a valuable addition to any bike enthusiast's toolkit.SpecificationItem Type: Mountain Bike HubMaterial: AluminumWeight: Approx. 1059g / 37.4ozSpeed: 8, 9, 10, 11, 12 SpeedCassette Body: forHG Cassette BodyPackage List2 xMountainBikeHub2 xBike Quick Release Skewer Axle