Source Popular LED Spotlight 5W 6W GU10 GU5.3 MR16 Led Lamp AC 110V-240V 12V AC/DC Indoor or Outdoor Spot Light LED Bulb on m.alibaba.com
LH0995 Converts GU10 twist lock lamp holder/socket to a G5.3,GU5.3,GX5.3,GY5.3 bipin lamp holder/socket
LED Bulb Lamp Spotlight Reflector SMD 3W GU10 MR16 Gu5.3 No Dimmable Equal to Halogen Spot Light 50W with CE CB - China LED Lamp, Spotlight | Made-in-China.com
Great Value LED Light Bulb, 6.5W (50W Equivalent) MR16 Lamp GU5.3 Base, Dimmable, Soft White, 3-Pack - Walmart.com
FINELED MR16 to GU10 Adapter Converters Light Sockets Lamp Holder,MR16/GU5.3 To GU10 Light Bulb Base Socket Lamp Adapter Utilize GU10 Base Bulbs in a MR16 Socket - Amazon.com
10pcs Spot Foco Gu10 Gu5.3 Spotlight Warm White Daylight Cold White Ac220v 3w-8w For Home Decoration Replace Halogen Lamp - Led Bulbs & Tubes - AliExpress