YiLighting Supplier 6pcs UL-Listed Mogul (E39) to Standard Base Medium Edison Screw (E26/E27) Light Bulb Lamp Socket Porcelain Adapter Converter Reducer - Amazon.com
2 Pack Edison E27 Bulb Retro Lamp Holder, Vintage Edison Pendant Light Socket, Base Socket, Ceiling Pendant Lamp Holder for Coffee Shop Hotel Decor (Antique Bronze) - Amazon.com
E-Simpo B22 to E26 E27 Light Socket Adapter, UK AU India Bayonet Lamp Base to Edison Screw E26 E27 Bulb Holder Converter Adapter CE Rohs (4) - Amazon.com
E26/E27 Medium Edison Screw - E39/E40 Mogul Base Light Bulb Socket Lamp Enlarger Converter Adapter (1pcs/Pack) - Amazon.com