10x E40 to E27 Socket Adapter This accessory allows you to convert E40 socket bulbs into E27 sockets and eliminates the need to change installation! SIMPLE TO USE: Screw the adapter to your light fixture with E40 socket. Then, you just have to use the assembly with an E27 type bulb. SET OF 10: The set includes 10x adapter. Convert multiple E40 thread bulbs for maximum lighting in your home! FIRE RETARDANT: Sockets are made of flame-retardant PBT (polybutylene terephthalate). They are resistant and insulating. COMPATIBILITY: The adapter works with all E27 bulbs such as LED, halogen, energy-saving lamps, and Smart Home systems. With this set of socket adapters, easily attach your bulbs to the desired lamps. NO MORE WASTE: A mistake in choosing a bulb can easily happen. With this accessory, convert an E40 socket into an E27 socket and use the bulb as you wish.