Shimano CS-HG201 9-Speed Cassette 11-34T is a great value 9-speed cassette. Specifications: 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 Sprockets are cut away and drilled to reduce weight without reducing rigidity Corrosion-resistant steel cassette lockring For Super Narrow 9-speed HG chains
