U type CFL bulb: with excellent tricolor tube,U/spiral/lutos/plum blossom type available,with CE,RoHS,no flick,eyes friendly U type CFL bulb:Usingexcellent tri-color tube, high ... : 9mm, 12mm, 14.5mm, 17mmAppliedfor shops, houses, hotels, offices, etc. U type CFL bulb