E27 Porcelain Lamp Holder with Grounding earth terminal and M10 Threaded Hickey.
Lamp holder E27, screw thread M10x1, 52mm, black | 257.000027-0410
Kamas Hot 250V 4A E27 Light Bulb Base Plastic Full Screw Lamp Holder Pendant Socket Lampshade Ring for E27 Light Bulb White Black - (Color: White, Base Type: E27) - Amazon.com
Porcelain lamp holder E27 | Mullan Lighting
Plastic Lamp Holder with two screw rings and male thread - White (E27) - Kynda Light
Plastic Lamp Bases Adapter E27/E26 4A Light Bulb Lamp Holder Pendant Screw Cap Socket Vintage Black 250V - Amazon.com
NEEWER 2 Packs E27 Lamp Holder with Light Stand Mount - NEEWER
Remote Control Light Bulb Socket, Bukeer E26 E27 Bulb Lamp Holder with Remote Control and 15/30/60 Min Timer - Amazon.com
Screw E27 Light Bulb Lamp Holder Base Pendant Socket~3653 – LEDSone UK Ltd
Tuya Wi-Fi Smart Light Bulb Holder, Smart Slampher, E27 Wireless Lamp Holder Real Timer for Smart Home, with Remote Control,Timing Function, Voice Control - Walmart.com
E27 pendant Threaded Bakelite Lamp Holder Sockets
Arlec Screw E27 Lamp Holder and Cord Grip White | Homebase
Uxcell E26/E27 Screw Thread 41mm Light Socket Retro LED Bulb Lamp Holder White 10 Pack - Walmart.com
LH0596 E26/E27 medium base lamp holder/socket with spring clip mounting and 9" leads