Luminosa GU10 to E27 Lamp Holder Adapter Converter (Pack of 2) / GU10 Socket to Edison Large Screw / GU 10 to E27 LED Light Lamp Adaptor Convertor / CE Certified /
Edison Screw (E27) Lampholder (Light Bulb Holder) in Black Bakelite with Shade Ring and 10mm Threaded Entry : Amazon.co.uk: Lighting