Measurement: This mountain bike bearing hubs inner diameter is 27mm/1.06", outer diameter 30mm/1.18", and hight 10.5mm/0.41"
Good Quality: These front and rear wheel bearings hub cups are made of good-quality unshakeable, lightweight and easy to install
Function: Bicycle rear wheel hub cups serve to ensure stable and smooth wheel operation by fixing and supporting the rear wheel of a bicycle, thus reducing wheel friction
Wide Application: The mountain bike wheel hub rear axle cup is widely used to ordinary bicycle, folding bike, mountain bike, road bike and city bike