A high quality entry level rear alloy mountain bike wheel suitable for standard mountain bikes Black alloy hub with hollow quick release axle runs smoother & lasts longer than steel versions Quick release axle for easy wheel removal transportation or storage Shimano compatible cassette hub allows the fitting of 8 or 9-speed Shimano compatible cassettes Black alloy rim is lighter & more durable than steel & will not rust Galvanized spokes are tough & will resist corrosion Built to a high standard using quality components Quick release lever included