Features:*Operating Temperature: 140, Low Temperature, Saf and Longer Lifespan.*12V DC Power Input: Built-in Circuit for 12V DC Power Input, Compatible for Most Cars without Error Blinking.*20PCS LED Bulbs Set: White, This Bulb Fit for Many Different Position: Map Light, or Domes Light, Door Light,or License Plate Light, or Trunk Light, or Courtesy Light, etc*LED Lamp Has "+" and "-" Terminals: If the LED Does not Light, Just Simply Fliping it 180 Degrees to Reverse the Polarity of the LED Bulbs*If you have any questions, please contact us in time. We will provide you with better products and services.Notice:*Actual color may be slightly different from the image due to different light effect*Please allow 1-3cm deviation due to manual measurementDescription:Package Content: 20 LED Light Bulbs (4 pairs T10, 3 pairs 31mm and 3 pairs 42mm festoon)Color: 6000K WhiteCompatible with: T10/31mm/42mm-festoon