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 D' 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 adaptation is suitable for all E27 bulbs such as LED, halogen, energy saving lamps and even 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.