Product updated on 2020-09-17, SBx Parts - SBX:HID:AD5504S, 4 inch 55 watt HID spot light (10-30V ), Outside housing diameter 5.5 inches, This HID driving light puts out massive amounts of light at a low price making it the best value for your money. Designed specifically for off road usage it has a rugged housing and replaceable bulb and ballast. ,