ZTTO 8/9/10/11 Speed 11T/12T/13T Freewheel Flywheel Pinion for Bicycle Bike N9D9

Species: 8s 11T, 8s 12T, 8s 13T, 9s 11T, 9s 12T, 9s 13T, 10s 11T, 10s 12T, 10s 13T, 11s 11T, 11s 12T, 11s 13T (optional). 8s 11T / 9s 11T / 10s 11T / 11s 11T: 4.20 4.20 0.55cm / 1.65 1.65 0.22in.

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