Bottom cover material: ABS Standard material: aluminum. Size: Outer diameter: 60mm Inner diameter: 56mm Clamping pin protrusion diameter: 57.5mm Height: 16mm The size is measured manually, and the deviation range is 0.1-0.5MM. 100% Brand New Quantity: 1 piece Feature: durable, suitable for replacing damaged wheels and enhancing the appearance of wheels Note: 1. It is necessary to measure the two dimensions of the center wheel hole. The first is the outer diameter, and the second is the inner diameter. Or you can measure the old wheel center cover, or measure the outer diameter (O.D) and inner diameter (I.D) 2. Please check as many items as possible to ensure that they are what you need. 3. Due to different computer screens, there may be a slight color difference between the real object and the list image. Please consult customer service for other needs Thank you for your understanding.