2.4W LED MR11 Light Bulbs, 12V 20W Halogen , G4/GU4/GZ4 Bi-Pin Base | eBay
4-20P LED mini spot light MR11 GU4.0 Low voltage AC/DC12V 3W high bright no stroboscopic can be replaced with a 20W halogen lamp - AliExpress
MR11 GU4 LED Light Bulbs GU4 Bi-Pin Base AC12V 2W (20W Halogen Light Bulbs) Warm White 3000K Utral Bright Spotlight for Home Landscape Track Lighting,Pack of 6 - Amazon.com