B22 to E27 Adaptor,Bayonet BC Cap B22 To E27 ES Edison Screw Light Bulb Lamp Base Socket Converter [Indoor Use]Extender Adaptor Holder Fitting 220-240V B22 to E27 Lamp Socket Converter[5 Pack] :
Plastic Wall Fitting B22 - E27 Converter, For Home, Model Name/Number: Generic
ES E27 Edison Screw Cap Socket Fitting Pendant Ceiling Light Lamp Bulb Holder | eBay