3 Pack Medium Screw Base to Medium Base Light Bulb Socket Porcelain Extender, E26 E27 to E26 E27 Lamp Bulb Socket Extension Adapter, (Set of 3, Porcelain E26 Extender): Amazon.com: Tools &
TORCHSTAR 3-in-1 Light Bulb Socket Adapter, Adjustable E26/E27 Lamp Holder Switch Splitter, Standard Base for landscape accent lighting, exhibitions lighting, artwork lighting - Walmart.com
E-27 Black Fully Threaded Skirt Thermoplastic Lamp Socket Includes Shade Ring