Amazing power G4 LED Bulb, 12V JC G4 Bi Pin Bulb, NOT Dimmable G4 20W Halogen Bulb Replacement, Daylight White 6000K, 5-Pack - Amazon.com
Amazing power G4 Light Bulb, G4 LED Bulbs AC/DC 12V JC Type Bi Pin Base Bulb 20W G4 Halogen Bulbs Replacement for Landscape Lighting Daylight White 6000K 10-Pack - Amazon.com
Feit Electric 10-Watt EQ T3 Bright White G4 Base Dimmable Halogen Light Bulb in the Tube Light Bulbs department at Lowes.com