4 pieces - Hubcentric Rings Aluminium Hub Centric Rings 57.1x66.1mm A set of Four Aluminium Hub Centric Rings. Removes vibration from non hub centric wheels on your car. A set of Four Polycarbonate Hub Centric Rings. Removes vibration from non hub centric wheels on your car. Hub size (Vehicle Side): 57.1mm to (Wheel Side): 66.1mm