Shimano CASSETTE HG400 9 speed 11 25

High quality 9-speed cassette hyperglide sprockets have a computer designed tooth configuration with contoured shift gates, resulting in a crisp smooth shift even under load close ratio gearing allows a more efficient use of energy through finer cadence control gear ratios to suit all wheel sizes 700c/26/27.5/29inch sprockets are cut away and drilled to reduce weight without reducing rigidity