Shimano Alivio HG20 7 Speed Cassette
The Shimano Alivio HG20 7 Speed Cassette is great value 7-speed cassette. Hyperglide sprockets have a computer designed tooth configuration with contoured shift gates, resulting in a crisp smooth shift even under load. Corrosion-resistant steel cassette lockring. For 7-speed HG and IG chains.