1. It is used for changing the original headlight bulb seal cap. 2. It can help preventing water, dust, moisture or other small things out from your headlights or fog lights and make sure everything working fine. 3. Allow you easy to install the after market headlight bulbs/Lamps, Xenon Lamp, Bi-xenon bulbs without modifying. 4. If your bulbs little bigger than the hole of dust cover, you can use a knife to cut off the hole to be little bigger. 5. Material: silicone
