IMTRA ILGU4-21L12V60W MR11 12V 1.2W 60° MR11 GU4 Socket Cool White LED – Second Wind Sales
Gu4 / G4 Porcelain LED Bulb Lamp Socket with Clip and Wire - China Lamp Socket, Bulb Socket | Made-in-China.com
BA15S BA15D to G4/GU4/GU5.3 Socket Adapter Converter
E-Simpo 10PCS E26 to Gu5.3/GU4/G4/MR16 Adapter- Standard E26/E27 Edison Screw Base to MR16 GU5.3 G4 Gu4 Base Adapter Holder Converter (PBT Material) - Amazon.com