E27 To E14 Led Bulb Lamp Holder 2 In 1/3 In 1/4 In 1/5 In 1 E27 Base Socket Splitter Led Lamp Socket Light Bulb Adapter Holder - Lamp Bases - AliExpress
JACKYLED 3 in 1 E26 Light Socket Splitter Adapter Converter for Standard LED Bulbs 360 Degree Adjustable 180 Degree Bendable Max Watt 180w - Amazon.com
Murphy Adapter Nut 10050069
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Unique Bargains 2pcs E27 To E27 Light Lamp Bulb All Direction Extension Adapter Extenders For Home Light Fixtures Socket Converter : Target
Leviton 660-Watt Keyless Twin-Socket Lamp Holder Adapter R52-00128-00W - The Home Depot