G24 to E27 E26 4-Pin LED Light Sockets Adapter, Light Bulb Socket, Bulb Base Adapter, Converters Lamp Holder (Pack of 5) - - Amazon.com
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4pin G24 To E27 Lamp Holder Converters Light Bulb Base Socket Led Halogen Cfl Lamp Converter G24 Bulb Adaptor Screw - Lamp Holder Converters - AliExpress
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