T8 T12 L.E.D. tube, 8 foot, G13 rotatable end caps, low voltage 12-24 VDC, CE/FCC/Rohs, up to 4000 lumen output, only white 6000k, made of aluminum and PC materials. Uses 240 quantity 2835 smd chips, CRI >= 75. Power can be applied single end or both ends. Long life up to 30,000 hours. Please apply 12-24 DC power. This tube is Non Cancelable, Non Returnable, Non Warranty. The reason this tube is NCNRNW is because the tube can be installed in a fixture with a ballast and this will over voltage the tube. The tube is tested before being shipped.