T8 to T5 adapter is simple, practical and easy way to convert tired old T8 fixtures to the new energy saving and efficient T5 format. Simple swap over and exchange format. Save over 50-70% energy costs and increase illumination.1) New lighting product; save your energy, save your money! 2)This T5 Fluorescent lamp can replace the old type T8 fluorescent tube directly; 3)Has high output.4)With high Power Factor (PF), low operation current; Power factor up to 0.999, operation current reduces by 65%, output power reduces by 18%; 5) The same time brightness increase 1.1-2 multiple .6)Build-in electronic ballast and no starters needed; 7)Easy installation, Instant to start; 8)Long life span10,000-20,000 Hours,1 years warranty for light.2) CUT OFF technology, imported reflector cover with a glisten index above 85%. With perfect self- protect function: cut-off protection, overheat protection, overload protection, end of life protection3) CE,SAA,UL certification.color: 2700K, 4100K, 6400K.