This Light Is Suitable For Truck Or Trailer Applications. It Is 100mm Round Light With A Sealed Polycarbonate Lens And Abs Housing. The Light Has Leds With A Reflector And The Electronics Are Epoxy Encapsulated To Prevent Damage From Moisture Corrosion And Vibration. The Light Can Be Used From 12 24 V And Comes Complete With The Rubber Grommet.