... 12V LED light bar /4x4 LED driving light bar for Off road,Jeep,Truck,motorcycle,Atv,SUV,4WD,Car SR ... Series:10",20",30",40" 9-32V Single Row LED light ... beam. . Long life: more than ordinary advanced LED light bulbs, more than 30000 hours life . Aluminum ... or not)5.Why the Single row LED light bars is so hot ?a.High quality ...