Genuine Shimano replacement part Hyperglide sprockets have a computer designed tooth configuration with contoured shift gates, resulting in a crisp smooth shift even under load Gearing gives a low 32T sprocket making it easier to climb even the steepest of hills Sprockets are cut away to reduce weight without reducing rigidity Nickel-plated finish offers hard wearing resistance to corrosion Corrosion-resistant steel cassette lockring For 8-speed HG chains .
