Power:8w,14w,21w,28w,35w color temp.:2700k/6400k Dia.:16 wattage: 8W, 14W,21W, 28W, 35Wmaterial:aluminiumpower factor: more than 60%If you are interested, please contact me directly.1.High brightness 2.Environment friendly 3.Long lifespan 4.Safety and healthy 5.High quality and low price T5 lamp fixture /lighting fixture