These hub centric rings ensure a smooth and comfortable ride. These rings are easy to install and will improve your driving experience in no time. 4pc 66.6 to 73.1 Alumnum Wheel Hub Centrc Rngs OD 73.1mm D 66.6mm... Notes: The outside diameter of the spigot ring should fit the wheel's center bore in the back of the wheel. How to Choose the Hub Ring? Hub rings are sized by using two different numbers that are measured in millimeters. 4pcs/set 73*54mm Hard alloy for Rota Mags Wheel Center RDM Hub Centric MACHSWON 4pcs OD 73.1mm to ID 56.6mm Aluminum Alloy Car Hub Centric Rings Wheel Bore Center Spacer The inside diameter is the size of the wheel hub on the vehicle you intend to fit the wheels. Specification: Color: Silver Tone Outer Diameter: (Wheel Bore Size) 73., 1mm / 2., 88 Thickness: 10mm/0., 39 Package Includes: 4 x Hub Centric Rings Enhance Your Style: Not only do these hub centric rings improve your ride, but they also add a touch of style to your wheels. Vibration Reduction Rings 4Pcs/set Universal Aluminum Hub Center Rings 73.1-60.1 Wheel Spacers Aluminum Alloy Hub Rings Upgrade your vehicle's look with Hub Centric Rings.