Protect Your Tires and Driving Safe with Airtight, Leakproof Valve Cap Covers Made for Long-Lasting Reliability When you’re on the road, you don’t have time to worry about valve stems getting clogged up, leaking air, or breaking down and ruining a tire. That’s why we created Tire Valve Caps that offer an innovative airtight O-ring, an easy-to-grip anti-slip ridged design, and waterproof durability that can last through all your summer vacations, long trips, and busy workdays. Tire valve caps Luxury Design: The tire valve caps;are made of high grade ; light-Weight aluminum . Make your wheel looks more beautiful and luxury. Best gift for friends, family members and etc. Note: It is normal phenomenon that this wheel air valve stem caps;may fade when exposed to the sun for a long time, please replace or change these wheel;tire caps;regularly for better use. The tire valve;stem;caps;are made of aluminum alloy, you’d better match them with aluminum valve mouth. The valve caps;and valve would stick together if you match them with copper or zinc alloy material.