Features:<br>1, High quality sealing ring inside the valve caps, to prevent the flat tire.<br>2, Specially designed to replace the plastic caps. Easy to install and safe to use<br>3, Dust proof: To ensure stable tire pressure by protecting the valve core from corrosion due to direct contact with clay, water and snow.<br><br>How to maintain the valve caps?<br><br>To avoid the valve caps? natural oxidation and corrosion, we should maintain the valve caps with the following methods.<br>1, Avoid long time exposure of the valve caps to water or snow.<br>2, To unscrew and clean the valve caps, and to check the tire pressure on a regular basis, say 2-4 weeks/once, so as to prevent the oxidation of the valve cap threads and ensure the tire pressure normal.<br><br>Package:<br>5pcs/pack