2pcs E26 Lamp Bases Adapter Bakelite Bulb Light Holder Two Outlet Screw Socket With Pull Chain (black) | Fruugo NO
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 :
Black Light Bulb Socket to AC Outlet and Plugin Adapter with Pull Chain E26 LED | eBay