SmartDealsPro 12-Pack E27 Male to 2 Female Y Shape LED CFL Light Bulb Base Converter Adapter Splitter Lamp Holder Material: plastic and copper. Voltage: 0-285V. Max bulb power: 60W. Operating Temperature:-30 to +120. Max Temperature:120 . It allows 2 bulbs installed in one single socket at the same time. Can be used for all kinds of LED/ Halogen/ CFL Light Bulb lamp. For use with CFL (fluorescent lamps) and LED bulbs. NOT for lamp used on bath heater and heat bulbs. ***NOTE 1:*** To avoid electric shock, make sure the power supply is disconnected before replacing and installing the unit. ***NOTE 2:*** Based on the heat resistance of its lamp holder, the power of the bulbs can not exceed 60W.