Stronger iron support on the rear seat, providing enough strength for your application. The round amber and red white LED lights can be conveniently removed from the iron bracket base for replacement. The diameter of the round LED tail light is 4 inches, with the rubber grommet is 5.5 inches, with grommet for standard mounting hole. MULTIFUNCTION TAIL LIGHT - The round tail light with LED has the standard size 4 inch rubber grommet, which fits universally as tail light, turn signal, strobe, side/fender. CONNECTION INSTRUCTIONS - 5-wire connection system with colors for negative, turn signal, brake light, parking light and backup light. Easy to Install - The sturdy iron base with seven mounting holes for convenient installation, will not bend during installation and provide sufficient stability (screws not included). Accessories - Compatible with any DC12V system, ideal for trailers, trucks, RVs, UTEs, UTVs, boats, caravans, rigs, etc. Can improve safety and refresh the appearance of