TRANSFORMER: Thanks to the lamp base, you can easily convert E27 socket lamps to an E14 socket lamp. Assembly is simple and you benefit from great compatibility for use with many lamps! EASY TO USE: Simply screw the adapter to your fixture with an E14 socket. Then you just need to use the fixture with an E27 bulb. 4 TIMES MORE: The set includes 4 adapters. Convert several light bulbs to E27 thread for maximum light in your home! For maximum lighting at home! COMPATIBILITY: The adapter fits all light bulbs with E27 fitting, e.g. LED, halogen, energy-saving lamps and even from smart home systems. NO MORE WASTE: A mistake when choosing a light bulb can easily happen. With this accessory, you can convert an E14 socket to an E27 socket and use the light bulb as you wish. LIGHT EVERYWHERE: With these four adapters, you can light up your desk lamp, bedside lamp, ceiling lamp and lamppost. Enjoy a well-lit home! INSTALLATION: Simply screw the adapter onto a lamp with an E14 thread and then use your E27 light bulb - that's all. COMPATIBLE WITH: The adapter fits all light bulbs with E27 fitting, e.g. LED, halogen, energy-saving lamps and even from smart home systems. Outer connection: E14 Inner connection: E27 Dimensions: height without thread: 4.3 cm / diameter: 2.9 cm + 3.8 cm INCLUDED IN DELIVERY: 4x E14 socket adapter to E27