Festoon LED Bulb. 28mm length or 1.1" long. Works 6 Volt positive ground or negative ground. Long life up to 30,000 hours. Up to 50 Lumen output. Available in White 6000K and Warm White 3000K. Dimmable with a variable voltage supply such as a dashboard dimmer switch. Viewing angle 120 degrees. Comparable to 9 to 21 Watt incandescent bulb. Compatible with Volkswagen, Semaphore bulb, VHD-N17-7261, N177261.