Luxrite MR16 LED Bulb 50W Equivalent, 12V, Dimmable, 500 Lumens, GU5.3 LED Bulb 6.5W, Enclosed Fixture Rated (24 Pack) - On Sale - Overstock - 31860222
E27 to G4 / GU4 / GU5.3 adapter
GZ4 GX5.3 (GU5.3) G6.35 GY6.35Bulb Base Lamp Socket With 90 Degree Mounting
MR16 Halogen Bulb 35W Dimmable 12V GU5.3 Bi Pin Base Spotlight with Long Lifespan, 2700K Warm White MR16 Bulbs with Clear Glass Cover for Landscape Lights, Track Lights, Fiber Optics, 6 Pack
5pack Mini Bipin Socket Led Light Mr11 Mr16 Halogen Bulbs Base Lamp Gu5.3 G4 Gu4 | eBay
4x Mr11 Led Spot Light Bulb Warm White 3w 12v 35mm Diameter Mini Led Mr16 Gu4 Spotlight Bulb Gu5.3 Gu10 E27 Led Lamp 220v 110v - Led Bulbs & Tubes - AliExpress