Product information:
[Product name] 12T positive and negative tooth ceramic rear dial guide wheel
[Color] Seven colors black red blue gold
[Material quality] AL7075 aluminum alloy/ceramic bearing
【Weight】About 11g
[Diameter] Approximately 48mm
[Installation size] 4/5/6mm axis
[Advantages] Applicable to most rear dials on the market, supporting 7/8/9/10 speed. One thick gear and one thin gear are convenient to fill the chain gap and reduce the expansion of the chain so as to speed up the speed change and reduce the chance of chain drop.
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