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) - - Amazon.com
Demasled 5-Pack Mini Bi-pin Socket Led light mr11 mr16 Halogen bulbs base lamp gu5.3 g4 gu4 gu5.3 gu6.35 gy6.35 gx5.3 gz4 - Walmart.com
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
ALIDE MR11 GU4 Led Bulbs 3000K Soft Warm White 3W, Replace 10W 20W 35W Halogen Equivalent,12V MR11 GU4 Low Voltage Spotlights for Outdoor Landscape Flood Yard Track Lighting,Not Dimmable,30 Deg,6 Pack - -
2.5W MR11 GU4 12V by Green Creative - Marvel Lighting
E26 to G4 MR11 MR16 GX5.3 G6.35 Mini Bi-pin female Converter - Converters - LEDLight
Westinghouse 20-watt Halogen MR11 Clear Lens Low Voltage GU4 Base Xenon Flood Light Bulb, (2-Pack) 0621400 - The Home Depot