Skull tire valve caps 4PCS for cars and bikes, universal anti-oxidization1、Universal Accessory: The tire stem valve cap is extensively universal for most cars, bikes, SUVs, trucks and many other motor vehicles to meet your various demands, keep your driving safety. 2、High Quality Materials: The cap is constructed from premium ABS shell and copper inner, features excellent rustproof performance, especially in wet and cold area, durable in use. 3、Professional Production: The cap is die cast the copper molding at one time, fine treatment for high texture and glossiness, as well as resistance to oxidization, rust and wear. 4、Skull Style Design: The tire valve stem cap is especially designed with skull shape, easier to grab and tighten, also a delicate decoration for your vehicle, making it more distinctive and eye catching. 5、Inner Rubber Washer: There is a rubber ring for airtight seal, prevent air escaping and prevent cap from loosening and falling off for vibrations, also prevent from dirt and moisture.