The Novelty Car Bike Tyre Willy Penis Dick Valve Dust Caps Pack of 4 in natural colour, made by RS3D, are designed for easy installation and are dustproof. These valve caps are made of plastic and do not require any tools for installation. Manufactured in United Kingdom, this pack includes four valve caps that add a playful touch to your car or bike while also serving a practical purpose in protecting your tyre valves from dust and dirt. Perfect for those looking for a unique and fun accessory for their vehicle.