Westinghouse 20-watt Halogen MR11 Clear Lens Low Voltage GU4 Base Xenon Flood Light Bulb, (2-Pack) 0621400 - The Home Depot
E-Simpo 10PCS E26 to Gu5.3/GU4/G4/MR16 Adapter- Standard E26/E27 Edison Screw Base to MR16 GU5.3 G4 Gu4 Base Adapter Holder Converter (PBT Material)
led spotlight bulb 3w mr11 rgb led mini bulbs 35mm gu4 220V 110V AC 12V LED spot light 3W GU10 E27 MR16 led light lamp|mr16 led lamp|led lamp3w gu10 - AliExpress
Feit Electric 20-Watt Equivalent MR11 GU4 Bi-Pin Dimmable 12-Volt Track Lighting 90+ CRI LED Flood Light Bulb, Bright White BPFTD/930CA - The Home Depot