Check the listing for details. Shimano SLX CS-M7100 12 Speed Micro Spline Cassette 51T. Condition: New. Listed at 69.99 USD. ******Our warehouses are located in USA and Hong Kong and China, all other countries (except USA) will be shipped from our Hong Kong warehouse. ****** Shimano SLX CS CS-M7100 12 Speed Cassette 45T / 51T MTB With its BEAM SPIDER construction, the SLX M7100 12-speed cassette shaves weight while increasing SHIMANO's MTB gearing range another gear. Using SHIMANO's new MICRO SPLINE freehub body and HYPERGLIDE+ tooth profile, these 10-45 and 10-51T cassettes deliver advanced shifting performance. ．Advanced shifting performance provides the confidence to enjoy any trail Pedal continuously while shifting —HYPERGLIDE+ Lighter and stiffer cassette sprocket construction reduces inertia and increases acceleration BEAM SPIDER ．Lighter drivetrain set up 10T lowest sprocket realized by new FREEHUB body construction —MICRO SPLINE ．Wide range and close step 12-speed drivetrain ***These are OEM Shimano Parts, Brand new, Never Installed on Bike, Never used in any way, just NOT in retail packaging.***