TRANSFORMER: Thanks to this lamp base, you can convert an E14 bulb to a GU10 bulb. Installation is easy, and you benefit from wide compatibility for use with many bulbs! EASY OPERATION: Simply screw the adapter onto your light fixture with a GU10 socket. Then, just use the adapter with an E14 bulb. 4 TIMES MORE: The pack includes 10 adapters. Convert multiple E14 bulbs for maximum light in your home! Plus, the plastic base is durable. COMPATIBILITY: The adapter is suitable for all GU10 bulbs, such as LEDs, halogens, and energy-saving bulbs.