This product theory for additional lighting for picture or video, if you wish to upgrade your single socket lights, convert a single bulb comfortable to 3 / 4 / 5bulbs light, here's your best option is E27 base, identical match as steady family bulb socket:Base type: standard E27 baseSupport power: 60W each socketVoltage:90V-240VSuitable for:Home and Studio daylight hours bulbs in photographic use.]