1-20PCS Light Socket Converter E12 to E27 Adapter Socket E12 to Medium E27 Base | eBay
DECIMAL TO BASE 12 CONVERTER (WITH STEPS)
Amazon.com: E-Simpo®12-Pack E26 to E12 Adapter, UL Approval, A19 E26 to E12 Candelabra Base Converter, Converts Standard (E26) Bulb Base to (E12) Chandelier Socket Candelabra, Screw Lamp Base Reducer : Tools &