FINELED MR16 to GU10 Adapter Converters Light Sockets Lamp Holder,MR16/GU5.3 To GU10 Light Bulb Base Socket Lamp Adapter Utilize GU10 Base Bulbs in a MR16 Socket - - Amazon.com
Gu5.3 Lamp Holder Socket with 150mm Cable Cord and Terminal Block for MR16 LED Light - China Lamp Holder and Gu5.3
OhLectric Halogen Bulb Socket - MR16 Base Porcelain Lamp Holder - Bi-pin Lamp Socket - 8-Inch Lead, Incandescent Light Holder - Best Heat Resistant - Stripped End for Easy Connect - White - OL-40892 - - Amazon.com
MR16 Halogen Lamp Socket
MR16 Sockets and Lamp Holders - Lighting Accessories – BulbAmerica