Shimano HG50 8 Speed Cassette CSHG508225

High quality 8-speed cassettehyperglide sprockets have a computer designed tooth configuration with contoured shift gates, resulting in a crisp smooth shift even under loadclose ratio gearing allows a more efficient use ofenergy through finer cadence controlsprockets are cut away to further reduce weight without reducing rigiditynickel-plated finis... moreh offers hard wearing resistance to corrosioncorrosion-resistant steel cassette lockringfor narrow 8-speed hg chains