Generic 55w HID Xenon Conversion Bulbs Lamps Size D2S Color 10000k It is only compatible with cars with an HID system already installed. Otherwise a conversion kit is necessary. Easy to Install (no wire-cutting or special skills required) water proof, dust proof, reverse polarity protection, short circuit protection, shock protection Produces 2 to 3 times as much light as a halogen bulb True 55W Bulbs, up to 1.5 x brighter than 35W HID