Housing the same medal-winning technology as SRAM's other Transmission (T-Type) cassettes, the XS-1270 Cassette offers incredible performance with amazing value. Finished in a unique nickel chrome, this cassette is quiet and durable and features a replaceable cluster of gears 8-12. *The XS-1270 T-Type cassette is only compatible with Shimano HG Freehubs SRAM XS-1270 Cassette Features: Full X-SYNC for best-ever inboard and outboard shifting performance under load. Optimized gear steps on the low-end Gears 8-12 are a replaceable cluster Unique black nickel chrome finish 55mm chainline compatibility for a more moderate chain angle, longer wear, and greater precision Setup Cog for simple set up SRAM XS-1270 Cassette Specs: Model ID: CS-XS-1270-A1 Range: 10-52t Cog Details: 10,12,14,16,18,21,24,28,32,38,44,52t Cog Material: Steel Speed: 12-Speed Weight: 552 g SRAM XS-1270 Cassette Compatibility: The SRAM XS-1270 Eagle Cassette is compatible with the following: SRAM Transmission chains & drivetrains Shimano HG Freehubs (steel & aluminum)