About this item Size: These wheel nut caps fit all automobile wheels with a diameter of 19mm/0.75 inch. Before ordering, please measure the bolts and car model. Function: Improve wheel smoothness and protect bolt heads from corrosion or rust. < br> Material: These wheel nut covers are made of high quality plastic material. The wheel nut bolt cover is very suitable for your car, improving the appearance of the wheel. Feature: Universal car wheel nut cover. Protect and decorate automobile wheel bolts. Easy to Install: Easy to install, just press the lug nut covers directly onto the bolts. The tools are easy to remove.