Lighting Accessories E40 Ceramic Lamp Base / Light Holder Socket 5PCS _ - AliExpress Mobile
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
Porcelain E40 lamp holder kit
BRASS E40 BULB HOLDER CERAMIC BASE | Home Furnishings | DYKE & DEAN
Source E40 ceramic light bulb socket with metal cap for Argentina on m.alibaba.com
Source ceramic lamp socket or porcelain e40 screw lamp holder with bracket on m.alibaba.com