spiral energy saving lamp:with excellent tricolor tube,with CE,RoHS,no flick,eyes friendly, environment friendly spiral energysaving lamp:Usingexcellent tri-color tube ... safety, save 80% energy, safe performanceaccords with international standards, with certificate of CE, RoHs, ISO 9001:2000Main shape:2U, 3U, 4U, ... , 14.5mm, 17mmAppliedfor shops, houses, hotels, offices, etc. spiral energy saving lamp