Versatile Exercise Bike Middle Wheel Axle for Various Dynamic Bicycles

1x Exercise Bike Wheel Axle. Size1: Length: Approx. 17mm ；Screw hole spacing : 60mm. Size2: Length: Approx. 17mm；Screw hole spacing : 60mm. Size3: Length: Approx. 20mm；Screw hole spacing : 66mm. Size4: Length: Approx.

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