... lifespan. 3.save energy Provide T4,T5,T8,T9,T10,T12. T5 fluorescent tube:Tri-phosphor powder or halogen powder.Power:4w,6w,8w,14w,21w,24w ... -6500KDiameter:16mmBase:G5Features:1.save energy over 45% than ordinary fluorescent lamp; save much cost for you;2.high efficiency and ...