Details CS-G11 cassettes combine microSHIFT’s continuously molded cogs with a CNC machined aluminum spider to deliver rapid, precise shifting at a lower weight. Continuously molded cogs are straighter than stamped steel, resulting in more consistent, predictable shifting performance CNC machined aluminum alloy spider carrier saves weight Precision ramps and chamfers for rapid chain movement Compatible with SRAM and Shimano 11-speed systems Aluminum lock ring Cassette Body Type: Shimano/SRAM 8, 9, 10 Speed Cassette Cogs: 11-13-15-18-21-24-28-32-36-40-46 Color: Black Defined Color: Black Drivetrain Speeds: 11 Range: 11-46