This 20PCS Car Wheel Lug Nut Cover Kit is designed to protect wheel bolts from dust, dirt, rust, and corrosion while enhancing the overall appearance of your vehicle’s wheels. Made from durable plastic, these bolt protector hub screw caps provide a snug and secure fit with easy push-on installation. Suitable for 17mm, 19mm, and 21mm lug nuts, this set helps extend the life of your wheel bolts and gives your car a clean, finished look.