E12 Candelabra Socket,TWDRTDD Black 3-Pack Candelabra Base Lamp Holder Light Socket Black (Full Uno Thread and Ring) - - Amazon.com
Light Bulb Socket Adapter Candelabra E12 to Medium Base E26 Screw Enlarger | eBay
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TORCHSTAR 10-Pack E26/E27 to E12 Socket Adapter, Medium Screw Base to Candelabra Base Bulb Converter Reducer, Anti-burning, Heat-resistant, 125V Max 75W - Walmart.com