Meets all applicable DOT/SAE standards and fit standard trailer light mounting position | 10 LED super diodes for each light. grommet fits standard mounting position | This sale includes 4pc of 6" Red Oval Trailer Lights. waterproof submarine Includes 3-pin water tight plug with wires | the Light is 2-5/16" x 6-7/16" oval, 1" thick (1-3/4" thick at wiring connection). Fit in a standard 2-1/2" x 6-3/4" oval hole.