Quasar Science designers of 95+ CRI Dimmable LED Lamps replicating Daylight, Tungsten and Fluorescent Lights. Their popular Quasar Tubes are BiColor LED tubes designed to replace T12 and T8 lamps. Simple to use as no ballast is required and are powered by 120VAC or 240VAC. Operate as a single tube LED light or gang 2 or more together with quick connect power adapter harness. Providing 90 lumens per watt for superior light output with 95+ CRI.