Vinaco GU10 Bulb, 6 Pack Halogen 120V 50W, Dimmable, MR16 GU10 Light Bulb with Long Lasting Lifespan, gu10+c for Track&Recessed Lighting, Gu10 Base Bulb, 50W MR16/FL/GU10, Warm White - Amazon.com
LUXRITE 50-Watt Halogen Equivalent MR16 Dimmable GU10 Base LED Light Bulbs Enclosed Fixture Rated 4000K Cool White (16-Pack) LR21502-16PK - The Home Depot
Simba Lighting® LED GU10 5W Dimmable 50W Halogen Replacement Bulb Twist Base 120V 2700K, 6-Pack
Feit Electric 20-Watt EQ MR16 Bright White GU10 Pin Base Dimmable Halogen Light Bulb (2-Pack) in the Spot & Flood Light Bulbs department at Lowes.com