Led Gu5.3 Bulbs 5w Ac/dc 12v Mr16 Led Bulb 50w Gu5.3 Halogen Replace Led Gu5.3 Gx5.3 Bi-pin Base 12v Gu5.3 Mr16 Led Bulbs - Led Bulbs & Tubes - AliExpress
AH Lighting MR16 EXN Type 50W GX5.3 Base 12V (Pack of 12) - Halogen Bulbs - Amazon.com
LED-MR16-4W Amber Color - 12 volts, 4 watts, LED MR16, GX5.3 (2-pin) base 600300321401 | eBay