This is the Red Oval Incandescent light for your trailer. This light is sealed and can be submerged so it is a great lighting option for any trailer, from Boats to Utility. It is a three function light meaning that it is a stop,turn,and tail light. If you've lost or damaged a 6 1/2" Incandescent oval light, this is the direct replacement. It includes the Mounting Grommet and 3-Prong style wiring harness. This price is for one light, grommet, and plug. This would be considered an Industry Standard Oval trailer light.