E26 Porcelain Twin Lamp Socket with 1/8ips Threaded Bushings and Pre-Wired 36in Long 18 AWG Wire Lea
Leviton Keyless Medium Base White Porcelain Lamp Socket - Gillman Home Center
Hillman 660-Watt Porcelain Keyless Lamp Socket, White in the Light Sockets department at Lowes.com
Amazon.com: UltraPro Porcelain Light Socket with Outlet and Pull Chain Light Fixture, Light Bulb Socket, Medium Base, Grounded Plug, Indoor Lighting, Mount on 3-1/4” or 4” Box, UL Listed, White, 18305,1-Pack :
The $5 Light Socket That Somehow Works in Every Room | Architectural Digest