TRANSFORMER: Thanks to the lamp base, you can easily transform bulbs with E27 sockets into E40 sockets. Assembly is easy and you benefit from great compatibility for use with many lamps EASY OPERATION: Just screw the adapter to your luminaire with E27 socket. Then you just have to use the assembly with an E40 type bulb. 4 TIMES MORE: The set includes 4 adapters. Convert multiple bulbs to E27 thread for maximum light in your home For maximum lighting at home COMPATIBILITY: The adaptation is suitable for all bulbs with E40 fittings such as LED, halogen or energy saving lamps. OUR RANGE : Our offer includes many other electronic devices including bulb adapters of different types. An error in the choice of bulb can easily happen. With this accessory, convert an E27 socket into an E40 socket and use the bulb as you wish. LIGHT EVERYWHERE With these four adapters, light up your desk lamp, bedside lamp, ceiling lamp and floor lamp . Enjoy a well-lit home INSTALLATIONSimply screw the adapter to an E27 threaded lamp and then use your E40 bulb - and voila. COMPATIBLE WITHThe adapter fits to all bulbs with E40 fitting such as LED, halogen or energy saving lamps. TECHNICAL DATA External fitting: E27 Internal fitting: E40 INCLUDED IN DELIVERY 4x E27 to E40 socket adapter