5-50PCS MR16 MR11 GU5.3 G4 Lamp Holder Bulb Base with Wire Ceramic Halogen Socket Pottery Connector 12V - 250V Led Light - AliExpress
OMTO MR16 GU5.3 GY6.35 Lamp Socket, Common to Miniature Bi-Pin Base G4 G6.35 GX5.3 GZ4 MR11, LED Halogen Incandescent Led Socket Ceramic Body Lamp Holder (12-Pack) (12-Pack) - Amazon.com
GZ4 GX5.3 (GU5.3) G6.35 GY6.35Bulb Base Lamp Socket With 90 Degree Mounting