M9 Cassettes offer a wide-range ratio for 9-speed MTB sytems.Features:Nickel Finish Steel spiderSpecifications:Defined Color: Black Color: Black Weight: 358 Cassette Body Type: Shimano/SRAM 8, 9, 10 Speed Cassette Body Type_1: Shimano/SRAM 8, 9, 10 Speed Drivetrain Speeds: 9Cassette Cogs: 11-12-14-16-18-21-24-28-34 Range: 11-28