A. Material: The inside of the socket is made of ceramic for high temperature resistance in Celsius, and the outside is PBT flame retardant material, which is safe and lightweight. It is an E27 to GU10 socket adapter, suitable for replacing E27 spotlights on a ceiling light with GU10. B. Compatibility: It is an E27 to GU10 socket converter. It is compatible with LED bulbs, halogen bulbs, smart bulbs, and energy bulbs. It operates at 220V and 5A, and is suitable for using GU10 bulbs configurable by bluetooth. C. Does the Job: It is an E27 screw socket converter and is easy to install. The E27 to GU10 adapter enables you to reuse GU10 bulbs and use them on standard bases without changing the original socket. D. Applications: It is an E27 to GU10 bulb socket. It is suitable for replacing classic bulbs for model making in GU10 sockets! Such as sconces, chandeliers, table lamps, spotlights, ceiling lights, etc. E. Package: 6 pcs of lamp caps.