Item Type: E27 to E40 Light Socket AdapterMaterial: Copper, PBTVoltage: 110-240V Can Be Used1PREMIUM MATERIAL: LED light bulb socket adapter is made of premium copper and PBT environmentally friendly flame retardant material as the shell, wear resistance and drop resistance, safe and secure to use. 2E27 TO E40 LIGHT SOCKET ADAPTER: LED light bulb socket adapter is used to convert E27 base lamp to E40 base lamp. 3COPPER CONTACTS: E27 to E40 light socket adapter adopts copper contacts material, physically change the contacts, do not change the voltage or current. 4EASY TO OPERATE: A set of two LED light bulb socket adapter, easy and simple to change, easy to operate. 5HIGH SAFETY: E27 to E40 light socket adapter is suitable for LED light bulbs, high temperature resistance, combustion resistance, no fire hazard.2 xE27toE40LightSocketAdapter