ledscom.de GU5.3/G4 Ceramic Socket, White, 12V AC/DC, Max 25W, Pack of 10 : Amazon.de: Lighting
TORCHSTAR G4, GU5.3 Bi-Pin Socket, up to 75 Watts, Ceramic Body with Mica Covers, for LED Halogen Incandescent Light Bulbs, MR11, MR16, Pack of 5 : Amazon.ca: Tools & Home Improvement