TRANSFORMER: Thanks to the lamp base, you transform an E27 socket bulb for a B22 socket lamp. Assembly is easy and you benefit from great compatibility for use with many bulbs! EASY OPERATION: Just screw the adapter to your luminaire with B22 socket. Then you just have to use the assembly with an E27 type bulb. 4 TIMES MORE: The set includes 4 adapters. Convert multiple E27 bulbs for maximum light in your home! In addition, the plastic base is durable. COMPATIBILITY: The adaptation is suitable for all bulbs with E27 fitting such as LED, halogen and energy saving lamps. NO MORE WASTEA mistake on a bulb choice can easily happen. With this accessory, convert a B22 socket into an E27 socket and use the bulb as you wish. LIGHT EVERYWHEREWith these four adapters, light up your desk lamp, bedside lamp, ceiling lamp and lamp post. Enjoy a well-lit home! INSTALLATIONSimply screw the adapter to a B22 fitting lamp and then use your E27 bulb - that's it. COMPATIBLE WITH The adapter is suitable for all bulbs with E27 fitting such as LED, halogen or energy saving lamps. TECHNICAL DATA External connection: B22 < p>Inner connection: E27 4x B22 to E27 socket adapter