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 aftermarket headlight bulbs/Lamps, Xenon Lamp, Bi-xenon bulbs without modifying.
4. This rubber housing seal caps only work for 10cm inner diameter lights housing, please double check with your stock headlights housing before purchase.