Lampholder halogen dichroic MR16, G4, G6.3 or GX5.3 with screws
MR16 Vertical Pin Downlight G4 Base LED Premium Bulb | West Marine
50PCS MR16 G4 Ceramic Lamp Holder Socket Connector LED CFL Halogen Adapter with Sale - Banggood USA-arrival notice-arrival notice
1pcs E14 to MR16 G4 GU5.3 Extension lamp Base Conveter E14 MR16 Holder Socket Fireproof Material For LED Bulb Adapter Conversion|Lamp Bases| - AliExpress
E14 TO MR16 G4 Lamp Holder Converter 110V 220V Base Socket Adapter For LED Lamp Corn Light Bulb|Lamp Holder Converters| - AliExpress
Lt2302 Heavy-Duty Die-Cast Brass Antique Bronze G4 or MR16 (Lamp not included) LED Wall Washer for Outdoor Residential Landscape Lighting - China Antique Bronze LED Wall Wash and LED Flood Lighting Fixture