MR16 Round Lamp Socket with with Male Banana Plug | Step 1 Dezigns
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) (6-PACK) - - Amazon.com
Ushio MR16 GU5.3 & GX5.3 Base Rim Mount Lamp Holder – BulbAmerica