Material: The automotive H-ID xenon lamp ballast is made of metal, which has the characteristics of heat resistance and stable electrical efficiency. It adapts to your car, has a longer service time, and is not easy to be damaged. Function: The ballast provides the voltage required to light the bulb and adjusts the current of the bulb after the bulb is lit. It can act as a DC to AC converter so that you can use the ordinary DC power supply in the car to light the bulb efficiently. Installation: The design of the ballast fully considers the convenience of the user. The installation process is very simple and the user can replace it without the help of special tools or the assistance of professionals. Quality: Made of materials that meet strict OEM requirements, this product offers stable performance and is an ideal replacement option. Note: To ensure you receive the correct item, please confirm that your OEM number matches the one in the description.