SMOOTH RIDE.Use the SRAM PG-970 9-Speed cassette with your mountain bike hubs. FEATURESPowerGlide IIGao design for reliable shifting and long-lasting performanceCassette range provides balanced gearing for hills and flats: 11-32 cassette: 11, 12, 14, 16, 18, 21, 24, 28, 32; 11-34 cassette: 11, 13, 15, 17, 20, 23, 26, 30, 34Shimano compatibleImported