47.5x12.5mm 35T Planetary Gear Oblique Teeth Gears With 10mm Bearings E-bike Helical Gear For Electric Bike E-bike M1.25 PA66

47.5x12.5mm 35T Planetary Gear Oblique Teeth Gears With 10mm Bearings E-bike Helical Gear For Electric Bike E-bike M1.25 PA66

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