Hella Optilux XY extreme yellow light bulbs, H11 12 Volt 55 Watt. Designed to give you better visibility in extreme weather conditions as well as provide the look of GT Series race car lights. Yellow beams provide a better color contrast in rainy, foggy, and white out conditions. Bulbs are sold in a set of two. Due to the high light output these bulbs ARE ONLY FOR OFF ROAD USE!