Fancierstudio 4 Socket Adapter 4 in 1 Adapter Holder E27 Bulb Lamp Light Socket Splitter For Photo Studio By Fancierstudio 6801 4 in 1 studio E27 lamp socket splitter adapter for studio daylight bulbs Allows 4 bulbs installed in one single socket for bright illumination convert a single bulb light to 4 bulbs light, this is the best choice. Base type: Standard E27 base Support power: 150Wx4 (600W in total)