Cap Material: ABS plastic. Logo Material: Aluminum. Size : Outer diameter:68mmInner diameter:62mm Pinouter diameter:64mm High:12mm The dimension is measured manually and thedeviation range is0.1-0.5MM. Conditions:100%brand new Material: plastic On board: Front/After/Right/Left Quantity:4 pieces Features: durable, suitable for replacementof damaged wheel, enhance the characteristics of the wheel Accessories: for General Motors Note: 1.There are two dimensions of the centerwheel hole that need to be measured. The first is the outer diameter and thesecond is the inner diameter. Or you can measure the old wheel centercover, or you can measure the outside diameter(O.D)And inner diameter(I.D)。 2.Please check as many projects as you canto make sure they are what you need. 3.Due to different computer screens, theremay be slight color differences between the real objects and the list images.Thank you for your understanding.