... 90% Optically Pure. Material: Extruded 6061 Aluminum Housing,PC lens. 30 Inch LED light bar use Cree LED chip.. Advanced Heat Sink ... 30 Inch 180W Single Row LED Light Bar Low Current Draw means no harms to battery and save gas.. Wide operating voltage range ... : it can apply to different types of trucks, Off-road vehicles, 4x4, Military, Mining, Boating, Farming, Heavy Equipment etc.. 30 Inch ...