[Material]: Flame-retardant plastic, safe and lightweight. Efficient. This B22 to E27 adapter allows you to use modern E27 LED bulbs with B22 sockets. You can use E27 screw-in bulbs to light up your basements and closets! [Compatibility]: Bayonet adapter for E27 bulbs. Compatible with E27 CFL and LED bulbs up to 60W. Not compatible with incandescent lamps and heat lamps (UVA, UVB, etc.). It is a great solution for installing a vintage E27 candle bulb in a vintage chandelier with a B22 socket. [Function]: Bayonet adapter (B22 to E27). Easy installation: Simply screw the E27 bulb onto the adapter, then screw the assembly onto a B22 socket bulb. This bayonet/screw adapter is perfect for adapting Philips Hue bulbs to older fixtures. [Application]: A B22 to E27 socket converter makes lighting your home easier! E27 bulbs are widely available, and you can choose from modern, vintage, smart, filament/flame, and more. You can use newer, more energy-efficient LED bulbs without having to replace your socket. [Note]: Please note that this will slightly increase the total distance between the original socket and the end of the bulb. Be careful when tightening the bulb during installation, but be careful not to tighten it completely.