Amazing power G4 LED Bulb, 12V JC G4 Bi Pin Bulb, G4 20W Halogen Bulb Replacement, Daylight White 6000K, 5-Pack - - Amazon.com
Philips 20-Watt T3 Halogen 12-Volt G4 Capsule Dimmable Light Bulb (2-Pack) 417204 - The Home Depot
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
G4 2W/3W/5W Dimmable 12V LED Bi-Pin Light Bulb | Landscape Lighting Accessory | Sun Bright Lighting