The Shimano HG50 8 speed road cassette is a worthy upgrade for your bike. This high-quality 8-speed cassette comes with close ratio gearing for finer cadence control. A nickel-plated finish ensures youll be using this Shimano upgrade for a long time to come. Key Features:Hyperglide sprockets have a computer designed toothconfiguration with contoured shift gates, resulting in a crisp smooth shift even under loadClose ratio gearing allows a more efficient use of energy through finer cadence controlSprockets are cut away to further lighten the cassette without reducing rigidityNickel-plated finish offers hard wearingresistance to corrosionCorrosion-resistant steel cassette lockringFor Narrow 8-speed HG chainsWeight: 380 g for 11 - 30T