Quluxe G4 LED Bulb Socket Halogen Base Ceremic Lamp Holder Socket, Miniature Bi-Pin Base Socket, Halogen Incandescent Led Socket Ceramic Body Lamp Holder (Pack of 10) - Amazon.com
10pcs/lot G4 Lamp Holder Socket Base Adapter With Wire Ceramic Socket For Led Halogen Light Bulb Holder Connector Head - Lamp Bases - AliExpress
Rayhoo G4 LED Bulb Socket Halogen MR11 Base Ceremic Lamp Holder Socket, Miniature Bi-Pin Base Socket, Halogen Incandescent Led Socket Ceramic Body Lamp Holder, 10-Pack - Amazon.com
Rayhoo G4 LED Bulb Socket Halogen MR11 Base Ceremic Lamp Holder Socket, Miniature Bi-Pin Base Socket, Halogen Incandescent Led Socket Ceramic Body Lamp Holder, 10-Pack - Amazon.com
MR16 MR11 G4 GU5.3 MR11 Ceramic Base Socket Lamp Holder
LH0401 G4 bipin halogen push fit lamp holder/socket with 6" leads
4x G4 Base Ceramic Lamp Holder Socket Cable Halogen LED Bulb Down Light Fitting | eBay