LH0088 Incandescent medium base porcelain lamp holder/socket
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 :
Hickey Porcelain Light Socket with 18" Leads | Medium (E26)
E26 E27 Ceramic Light Socket, Helunsi Medium Base Porcelain Lamp Holder, Ceramic Light Bulb Socket with 12" Wire Lead, Medium Base Lampholder for Incandescent Led Light Bulbs Replacement (Pack of 4) -
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 :
Damar 03199A E26 Lamp Holder Socket Porcelain 6 inch 18 awg lead
Flush Mount Lamp Holder Two Piece Porcelain Sign Socket Vintage Marquee Top Quality Supplies for Your Handmade Lighting, Lamps, DIY - Etsy
Leviton - E-26 Medium Base One-Piece Glazed Porcelain Keyless Incandescent Lampholder