E26/E27 to E39/E40 Light Sockets Adapter, Light Bulb Socket, Bulb Base Adapter, Converters Lamp Holder, Converts E39 Pin Base Fixture to E26/E27 Standard Screw-in Socket (Pack of 10) - Amazon.com
Wrought Iron Ceiling Lamp Holder Corrosion Resistance Metal Ceiling Lamp Holder with E40 Screw Mouth - Walmart.com