Cassette Shimano CS-HG41 7-speed

Shimano Acera HG41 7 Speed MTB CASSETTESuitable only for cassette hubs! 8/9/10 hubs may require additional spacers to fit 7-speed cassette.TEETH: 11-28T (11-13-15-18-21-24-28)With lockringHyperglide (HG) 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 of energythrough finer cadence controlSprockets are cut away to reduce weight without reducing rigidityNickel-plated finish offers hard wearing resistance to corrosionCorrosion-resistant steel cassette lockringFor 7-speed HG chains