Halogen JC Type Light Bulb G4 Base 12 Volt 20 Watt - JC G4 12V 20W Pack of 3 Bulbs - Amazon.com
Feit Electric 20-Watt 12-Volt T3 JC G4 Bi-Pin Base Dimmable Landscape Garden Halogen Light Bulb, 2800K Bright White (12-Pack) BPLVQ20T3/2/HDRP/6 - The Home Depot
Polux JC G4 12V 20W halogen filament | Lunares Store