10T 11T 12T 13T 14T 15T 16T 17T 18T MTB Rear Derailleur Guide Pulley Wheel Sealed Bearing Jockey Wheel For Shimano Sram 12 Speed

10T 11T 12T 13T 14T 15T 16T 17T 18T MTB Rear Derailleur Guide Pulley Wheel Sealed Bearing Jockey Wheel For Shimano Sram 12 Speed

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