Kihung T8 LED Light Tube 4ft 20W (70W equivalent) 2500Lm Ultrahigh Brightness 4500K Daylight Glow, Clear PC Cover & Aviation Aluminum, Pack of 6 High efficient output, dual-ended power, clear PC cover, 2500 lumens ultrahigh brightness. Replace 70W fluorescent tubes, save more than 70% of the electricity. Normal service life of 50,000+ rated hours (more than 10 times the life of the fluorescents). No hazardous materials, no radiation, offer pollution-free, high quality light source. Not necessary to replace lampholder. International standard shape for replacing with fluorescents.