LH0402 E26/E27 medium base porcelain lamp holder/socket extender extends lamp approximately 1 1/4"
LH0959 E26/E27 medium base flexible lamp holder/socket extender, extends lamp 6 1/4 inches
Light Bulb Socket Extender Bulb Extender Lamp Holder for Site Home Toolroom 3121111214340 | eBay
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 to E26 Light Socket Extender Lamp Bulb Adapter Flexible Extension 60cm for sale online | eBay