TRANSFORMER: With this lamp base, you can easily convert E27 socket lamps to E14 socket lamps. Installation is simple and you get great compatibility for use with many lamps! EASY TO USE: Simply screw the adapter into 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 multiple bulbs to E27 thread for maximum light in your home! For maximum lighting at home! COMPATIBILITY: The adapter fits all bulbs with an E27 base, e.g. LED, halogen, energy-saving lamps and even from smart home systems. NO MORE WASTE: A mistake in 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 bulb - that's it. COMPATIBLE WITH: The adapter fits all bulbs with an E27 base, 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