Material: CE certified, flame retardant material plastic, safe and lightweight.DOES THE JOB.The B22 to E27 conversion adapter allows you to use modern E27 LED bulbs to fit the B22 base.You can use the E27 base spiral bulb to illuminate the cellar and closet! Compatibility: Bayonet adapter for E27 bulb.Compatible with energy saving lamp and E27 LED bulb under 60W, not suitable for incandescent and heating lamps (UVA, UVB, etc.).If you want to put the retro E27 flame bulb into the old chandelier with B22 socket, this is a good solution.Function: Screw Bayonet Socket Adapter(B22 to E27).Easy to install, simply screw the E27 bulb onto the adapter then screw the assembly onto the lamp equipped with a B22 socket.Bayonet/screw adapter, very practical for adapting Philips Hue lamps to old lighting models.Applications: B22 to E27 socket converter, allows you to improve home lighting more easily!E27 bulbs can be seen everywhere, you can choose from modern style, vintage style, smart bulb, filament/flame bulb, etc.No need to change sockets to use the new, much more economical LEDs.NOTE: You may want to consider that it slightly extends the overall distance between the original socket and the end of the bulb.Be careful when screwing in the lamp during installation, but be careful not to screw in the lamp all the way. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.