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
Lamp Halogen Gu4 24V 20W 30Deg Open : 9T7H | Lighting Plus
20W GU4 MR11 BULB - Modern Hardware | Modern Hardware
MR11 GU4 LED Light Bulbs GU4 Bi-Pin Base AC12V 2W (20W Halogen Light Bulbs) Warm White 3000K Utral Bright Spotlight for Home Landscape Track Lighting,Pack of 6 - Amazon.com