Material6061-T6 alloy hub-shell Axle14mm hollow bore, male axle, hardened heat-treated crmo Bearings3 high-quality bearing driver, 2 high-performance durable bearings in hub shell. Spokes36h ColorsBlack, polished Driverdurable and dependable 3 high-quality bearing driver with c-clip for longevity Featuressuper strong street cassette hub / RSD or LSD available / allen key inner axle for easy maintenance / durable and dependable 3-bearing driver system / Includes eclat Viper and Gong nylon-fibreglass hubguards Weight608g / 21.45oz