Hi，The size in the photo is measured manually with deviation (ranged) at 0.1-0.5MM. Before you place the order, please confirm the size first. If you don't know how to measure the size, you can ask the supplier of the wheel hub caps of the sizes, including Outer Diameter, Inner Diameter and Length of Clips. Product:O.Z M582 Car Wheel Center Hub Caps O.D=55mm I.D=52mm Material: ABS+Aluminum Pack: 4 pieces/set 100% Brand New. Easy to instal