DiCUNO E26 Socket Extender, E26 to E26 Standard Medium Base Lamp Bulb Socket Adapter of 5CM/1.97 Inch Extension, Max 200W Light Bulb Extender 2 Pcs - - Amazon.com
DiCUNO E26 to E26 3CM/1.2 Inch Socket Extender, E26 to E26 Lamp Bulb Socket Extension, Lamp Holder Adapter (4-Pack) - - Amazon.com
ALUCSET 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
E26/E27 to E26/E27 Lamp Bulb Socket Extender Adapter
E26 Medium Base Light Bulb Socket Extender (Extension: 6.5CM/2.56 Inch), E26 to E26 Standard Medium Screw Lamp Socket Adapter, Max 200W and 165℃ Heat-resistant E26 Extension Adapter (2-Pack) - Walmart.com