HIKARI JDR-9815FP - 20 Watt Halogen Light Bulb - MR16 - Frosted Capsule - GU10 Base - Flood - Glass Face - 4,000 Life Hours - 120 Volt
Sunlite 66010-SU 20MR16/GU10/FL/120V 20-watt Halogen MR16 GU10 Based Mini Reflector Bulb, Cover Guard - - Amazon.com
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
3W GU10 LED Spotlight, 20W Halogen Bulb Replacement