5pcs E27 to E27 LED Bulb Base Adapter Universal Light Converter Lamp Socket Holder for All Voltage Halogen LED CFL Bulb lighting
https://www.vogueparade.com/shopping/EN/530/1/1005003176853478/5pcs-e27-to-e27-led-bulb-base-adapter-universal-light-converter-lamp-socket-holder-for-all-voltage-halogen-led-cfl-bulb-lighting//