Aluminum waterproof caps: Solid Construction: They are made of high quality aluminum, ensuring strength and durability. They will therefore be used for many years. Universal use: the caps fit perfectly on car, bicycle and motorcycle valves. 5 PACK: A complete set of four valve caps for all vehicle wheels to ensure a consistent look, plus 1 spare cap. Easy assembly: With simple assembly, you can decorate your wheels quickly and easily, without any specialist tools. Protection: They constitute an effective physical barrier against mud, sand and humidity. Manual: Lubricate them before assembly (necessary), for example with oil, silicone, technical vaseline, etc. Loosen and tighten them regularly. If they are not lubricated and unscrewed for a long period of time, especially during periods of high temperatures, this can cause unscrewing problems. We offer the valve caps in five colors: blue, silver, black, red and bronze.