Features: Material: The shell of our lamp holder is made of quality PBT material, heat-proof aging, good insulating, durable and sturdy E27 to E27. The socket type is E27, so it is compatible with standard light bulb E27 Allowing 4 or 3 bulbs installed in one single socket at the same time, easy to increase lighting intensitys A must-have for anybody who needs to convert a dull & gloomy place into a place shining with light & brightness Application: Suitable for using with fluorescent bulbs in photography, home or other places Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Base Type: Standard E27 Base Color: White Shell Material: PBT Type: 3 in 1 Nominal Voltage: 110V-240V Wattage Of Each Socket: ≤60W Heatproof temperature: 120 ℃ 3 in 1 Type Socket Size: Each Socket Diameter: Approx. 3.8cm / 1.5inch Total Height: Approx. 9.4cm / 3.7inch 4 in 1 Type Socket Size: Each Socket Diameter: Approx. 3.8cm / 1.5inch Total Height: Approx. 10.2cm / 4inch Package List: 1x 3 In 1 E27 To E27 Base Light Lamp Bulb Adapter