Specification: Material:ABS plastic Front Diameter: Approx 65mm Back Side Outer Tooth to Tooth Diameter: Approx 56mm Back Side Inner Tooth to Tooth Diameter: Approx 52mm Quantity:4Pcs/Set Features: Auto plastic base. Tough in all weather conditions. Suitable for front or rear wheels center hubs. Enhance more elegant look, fit for cars, trucks or other vehicles. It is easy to install, directly click into place after removing your old caps. Suitable to replace your broken or lost one. There is no logo on caps Package Included: 4 x Wheel Center Rim Hub Caps Note: 1.We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need. 2. Please allow 0.5-1 inch difference due to manual measurement.(1inch=2.54cm) 3.There Are No Instructions Included In This Kit.Professional Installation Is Highly Recommended