Godox Tl-5 Tricolor Ac Slave Bulb E27 socket holder Speed Ring with five hole for Photography Lighting 5 Holder Tricolor Light is applicable for shooting in studios or workshops Add softbox to provide soft and even illumination; Light adjusts up and down as required We still offer Related AC slave Bulb and TL-5 is also Avaliable,Five E27 holders to fix bulbs,Multiple flexible lighting and dimming combinations Great for photographers or videographers of all skill levels Easily adjust power on the back of the socket via multiple switches