E12 to E26/E27 Light Sockets Adapter, Light Bulb Socket, Bulb Base Adapter, Converters Lamp Holder, Converts E12 Bulb Male Base to fit E26/E27 Female Socket (Pack of 10) - - Amazon.com
1X 4X E27 Light Bulb Holder Base Fitting Screw Cap White Lamp NEW Socket S8L1 - Walmart.com
Vintage aluminum E27 lamp holder kit
Fabric Flex Cable Light Fitting Pendant With E27 Bakelite Lamp - Etsy
E27 Light Bulb Base Socket Ceramic Edison Screw ES Cap Heat Lamp Holder Fitting | eBay