Description: Thanks to the lamp socket, you can easily convert light bulbs with an E27 socket to an E40 socket. Installation is simple and you get excellent compatibility. Compatible with use with many lamps. EASY TO USE: Simply screw the adapter onto your lamp with an E27 socket. Then you just need to use the device with an E40 light bulb. 4 TIMES MORE: The set includes 4 adapters. Convert multiple light bulbs to E27 thread for maximum light in your home. Compatible with maximum lighting in your home. COMPATIBILITY: The adapter is suitable for all light bulbs with an E40 socket, such as LED, halogen, or low-energy lamps. INSTALLATION: Simply screw the adapter onto an E27 threaded lamp, then use your E40 light bulb - and voilà. COMPATIBLE WITH: The adapter is suitable for all light bulbs with an E40 socket, such as LED, halogen, or low-energy lamps. TECHNICAL DATA: Outer connection: E27 Inner connection: E40 INCLUDED IN DELIVERY: 4x socket adapter E27 to E40