4pcs 51mm Outsize 45mm Innersize Rays CarAutomobile Wheel Center Cap Hub Cap Center Cover Sports Wheel Small Size Fitfor Enkei Wheel Cap Material: ABS plastic. Logo Material: Aluminum. Size : Outer diameter:51mm Inner diameter:45mm Pin outer diameter:48mm High:12mm The dimension is measured manually and thedeviation range is0.1-0.5MM. Conditions:100%brand new model:A018+radial 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 the second 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 yourunderstanding.