Westinghouse Mr11 Halogen Lamp 5 W Gu4 Base 1-1/2 In. 2900 K Carded - - Amazon.com
OSRAM 4058075264052 LED (monochrome) EEC A+ (A++ - E) GU4 Reflector 5 W Warm white (Ø x L) 35.0 mm x 38.0 mm 1 pc(s) | Conrad.com
LED MR11 bulbs spotlight bulb GU4 LED bulbs 5 W 18 LED bulbs 20 W 30 W halogen bulbs LED bulb 12V DC / AC for home lighting|LED Bulbs & Tubes| - AliExpress