LEDIN Error Free 2 SMD LED License Plate Light Mercedes W210 W211 R170 R171 W163 W164 2 pieces (a pair) of high power 2 SMD LED Festoon bulbs 6000K xenon HID white color temp. Type of Lights: LED light with error canceller function (w/ build-in resistor), OBC Error Free Bulb size in length: ~37-38mm (~1.42-1.45 inches), from end to end