Commercial Electric GU10-16 120-Volt 50-Watt Halogen Bulb (3 Pack) EE750FC-H - The Home Depot
Feit Electric 20-Watt EQ MR16 Dimmable Bright White Reflector Light Fixture Halogen Light Bulb (2-Pack) in the Halogen Light Bulbs department at Lowes.com
10)-Pack 50W GU10 +C 50 Watt Back Light Bulb Halogen MR16 120 Volt Anyray | eBay
GU10 Halogen Bulb 120v 50w Halogen Light Bulbs, 2800k Warm White gu10 Dimmable for Track Light Bulbs,Glass Cover for Range Hood Light Bulbs Pack of 6