******Our warehouses are located in USA and Hong Kong and China, all other countries (except USA) will be shipped from our Hong Kong or China warehouse. ****** CSMZ91 12 Speed The SunRace CSMZ91 WT5 10-50t 12 Speed Cassette delivers the advantages of a 10 tooth top gear in a surprisingly logical way. A small step-down is designed into the end of an otherwise standard cassette body and this allows the smaller 10t cog to fit. The cassette is constructed in the same way as the other lightweight cassettes in SunRace?s range ? two lightweight alloy carriers with cogs attached. The 10t and 12t cogs are machined out of a single piece of high tensile steel. Because the cassette and cassette body are based on existing designs the manufacturing cost is lower. MX90 Freehub Spoke Holes: 32 Length: 135mm Brake Compatibility: Disc 6 Bolt Axle: Quick Release Color: Black PCD: 48mm FTF: 68mm A7075 Alloy Cassette Carrie Sealed Cartridge Bearings For SUNRACE CS-MX9 10T and MZ91 Cassette etc Only Speed: 11, 12 Weight: 326g = 0.71lbs ***These are OEM Sunrace Parts, Brand new, Never Installed on Bike, Never used in any way, just NOT in retail packaging.***