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SHIMANO Repair Parts Chainring 44T (Black) FC-M480-SK FC-M480-S FC-M440-S FC-M440-L Y1EA98010 - Discovery Japan Mall
![How do I know which one is genuine on SM-RT66 rotors? One says made in China (SK) while other says Japan (RA). Both has different edges. Please confirm. Got china one from How do I know which one is genuine on SM-RT66 rotors? One says made in China (SK) while other says Japan (RA). Both has different edges. Please confirm. Got china one from](https://i.redd.it/k3tre6cqu2g81.jpg)
How do I know which one is genuine on SM-RT66 rotors? One says made in China (SK) while other says Japan (RA). Both has different edges. Please confirm. Got china one from
![SHIMANO Repair Parts Chainring 44T (Black) FC-M480-SK FC-M480-S FC-M440-S FC-M440-L Y1EA98010 - Discovery Japan Mall SHIMANO Repair Parts Chainring 44T (Black) FC-M480-SK FC-M480-S FC-M440-S FC-M440-L Y1EA98010 - Discovery Japan Mall](https://djm-aaa1.kxcdn.com/resources/upload/products/41C-IaEVMVL._AC_.jpg)
SHIMANO Repair Parts Chainring 44T (Black) FC-M480-SK FC-M480-S FC-M440-S FC-M440-L Y1EA98010 - Discovery Japan Mall
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