Ride anywhere with the wide-range PG-1230, 11-50 tooth Eagle cassette. The NX cassette gives riders every bit of the climbing range that the Eagle™ ecosystem affords with a simple upgrade to splined-drive body wheels. Details: Speed: 12-speed Gearing: 11-50t Technology (Cassette): PG Cog Sizes: 11-13-15-17-19-22-25-28-32-36-42-50 Compatibility: Chain: All SRAM Eagle 12-speed chains Freehub: Shimano HG/SRAM 8, 9, 10 Speed Rear derailleur (11-50t): All SRAM Eagle rear derailleurs