Do the work. The B22 to E27 conversion adapter allows you to use modern E27 LED bulbs to fit the B22 base. You can use spiral bulbs Supplied with an E27 base to light cellars and cupboards! Compatibility: Bayonet adapter for E27 bulbs. Compatible with energy saving lamps and E27 LED bulbs below 60W, not suitable for incandescent and heating lamps (UVA, UVB, etc.). if you want to put the bulb A vintage E27 flame lamp with a B22 socket on an old chandelier is a great solution. [Function]: Screw Bayonet Socket Adapter (B22 to E27). Installation is easy, just screw the E27 bulb onto the adapter, then screw the assembly onto the lamp with the B22 socket. Bayonet/screw adapter, very practical Compatible with Philips Hue lamps on older models of luminaires. Application: B22 to E27 socket converter, allowing you to upgrade your home lighting more easily! E27 bulbs are available everywhere, you can choose modern style, retro style, smart bulbs, Filament/flame bulbs etc. Use new, more economical LED sockets without replacing the sockets. Note: You can consider it to slightly extend the total distance between the original socket and the end of the bulb. Be careful when screwing in the light during installation, but be careful not to screw the light in all the way.