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Onite GU24 to E27 E26 Adapter for LED Bulb, GU24 to Medium Base Converts Your Pin Base Fixture to Standard Screw-in Lamp Socket 2 Pack - Light Sockets - Amazon.com
YiLighting - B22 to E26/E27 Two-Pin Socket to Standard Socket Edison Light Bulb Adapter Converter For LED Halogen CFL Light Lamp (2 Pack) - - Amazon.com
4 Pin G24 to Medium Base - Socket Adapter | CityLightsUSA.com
Amazon.com: LSE Lighting 4pin T5 Socket with a Wire for UV Bulbs Lamps : Tools & Home Improvement
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G4.0, G5.3, G6.35 Bi-Pin Base LED/ Halogen Lamp Holder
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G24 to E27 E26 2-Pin LED Light Sockets Adapter, Light Bulb Socket, Bulb Base Adapter, Converters Lamp Holder (Pack of 10) - - Amazon.com