MR16 LED Light Bulbs G5.3 Base 5W Light Bulbs 6000K Spotlight, Non-Dimmable,110V, 5W LED Replacement for 50W Halogen Bulbs for Track Recessed Down Lighting, Pack of 6 - Amazon.com
GU5.3 Base LED Light Bulb Dimmable 5W Spotlight,50W Halogen Equivalent, 120V MR16 Bi-Pin Base Warm White 2700K, Flood Light Bulb for Accent Lighting, Display Lighting, Track Lighting(Pack of 10) - Amazon.com
MR16 LED Light Bulbs G5.3 Base 5W Light Bulbs 6000K Spotlight, Non-Dimmable,110V, 5W LED Replacement for 50W Halogen Bulbs for Track Recessed Down Lighting, Pack of 6 - Amazon.com