Westinghouse 5-Watt 12 Volt Halogen MR11 Clear Lens Narrow Flood GU4 Base Light Bulb 0476600 - The Home Depot
Makergroup MR11 Gu4.0 Bi-pin LED Light Bulb 3W 12VAC/DC Low Voltage LED Spotlights Warm White 2700K-3000K for Outdoor Landscape Lighting and Indoor Recessed/Track Lights 2pcs - - Amazon.com
SANSUN 2.4W LED MR11 Light Bulbs, 12v 20w Halogen Replacement, Fiber Optics Christmas Tree Bulb, G4/GU4/GZ4 Bi-Pin Base, Daylight White 4000K, Non-Dimmable, (Pack of 4) - - Amazon.com