E26/E27 Edison Screw to GU24 Bayonet Lamp Base Adapter Converter
Bayonet Batten White Ceiling Lamp Holder BC B22 Light Bulb Socket Lamp Fitting | eBay
Amazon.com: KEIOMI 6 X Bayonet BC Cap B22 to E27 ES Screw Light Bulb Lamp Base Socket Converter Extender Adaptor Holder Fitting 220-240V Lamp Bases : Tools & Home Improvement