Mini GU4 LED Spot light Bulb 5W COB AC220V 35mm MR11 Led Bulb Lamp GU10 GU5.3 Led Corn Lamp Lampada Energy Saving LED Lighting - AliExpress Lights & Lighting
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
Universal halogen socket for cable set 12V, connector for G4/GX5,3/GY6,35/ GU5,3/GU4 - Paulmann
Feit Electric 20-Watt Equivalent MR11 GU4 Bi-Pin Dimmable 12-Volt Track Lighting 90+ CRI LED Flood Light Bulb, Bright White BPFTD/930CA - The Home Depot
BAY15D male to GU4.0 GU5.3 female - Converters - LEDLight
5pack Mini Bipin Socket Led Light Mr11 Mr16 Halogen Bulbs Base Lamp Gu5.3 G4 Gu4 | eBay