82 LED Bulb. BA15D Base. 6 Volt Positive Ground or 6 Volt Negative Ground. Up to 200 Lumen output. Up to 15 Candle Power. The maximum length is 1.25 inches and the maximum diameter is .75 inches. Comparable to a 10 to 25 Watt incandescent bulb. The L.E.D. bulb C-6 filament design. Single Filament. Uses up to 2 Watts @ 6 Volts. The base is BA15D with even bayonets. The lamp only has one brightness level. The bulb is dim-able using variable voltage supply such as dashboard knob. Great for license plate, turn, tail, brake, dome, dashboard, instrument panel lamps. The LED color is created by the material of the LED so it looks real nice monochromatic. The available colors are White 6000K, Warm White 3000K, Red 626nm, Green 526nm, Blue 646nm and Yellow 594nm. The old light bulbs were painted. Very low profile to fit Ford Model A cowl light. Long life up to 30,000 hours.