PIAA 6082 600 Series Clear HID Driving Lamp - Set of 2 Approx. 5-inch diameter suited for many smaller, lightweight lamp pods and light bars used by professional racers Low-consumption 35 watt 12V HID bulb with clear glass lens Features light weight silver PPS housing; highly resistant to extreme environments Includes two lamps, two ballast-igniter sets, pre-assembled wiring harness, relay and switch Professional installation recommended