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4pcs HID G12 to E26/E27 Light Socket Adapter Halogen G12 Lamp Base to Standard Medium E26 E27 Lamp Holder Converter: Amazon.com: Tools & Home Improvement
12 Pack E12 to E27 / E26 Adapter E12 Chandelier Socket to E27 / E26 Medium Socket Converter - - Amazon.com
Dual E27 Base to E27 Base Socket Adapter | Super Bright LEDs
E26/E27 to G24 Base Bulb Lamp Adapter Converter
Lamp Holder Adapter for Bulb E27 to B22 Lamp Socket Bulb Socket Adapter Converter Base Conversion Socket - - Amazon.com
Pack of 2) GU10 to E26/E27 Adapter - GU10 Bayonet Base to E26/E27 Edison Screw Bulb Socket Adapter Converter - - Amazon.com
TWDRTDD FINELED 3PACK E26 E27 to E17 Socket Adapter,Medium Screw to Intermediate Base E17 Light Bulb Socket Adapter Converter Reducer (3PACK) - - Amazon.com