8 to 9 Speed Rear Derailleur size-g-2-n-12420-b-639 Counter handle to track your

Counter handle to track your workout in real time

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TPU outer cover for good durability

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8 to 9 Speed Rear Derailleur size-g-2-n-12420-b-639 Counter handle to track yourDesigned for bikes with 8 or 9 speeds and a double or triple crankset. Features Screed length: Length Maximum teeth: 36 teeth Min teeth: 11 teeth Steel body Long cage rear derailleur compatible with Shimano and B'TWIN 8, 9 speed drive trains for smooth, precise gear changes. Compatibility For B'Twin and Shimano compatible 7 or 9 speed drivetrains. Designed for bikes with 8 or 9 speeds and a double or triple crankset.