Product Details: Equip your semi to be Ready for the Road Ahead™, with the Grote 4" Round Flanged LED Hook Up Light, a key device that sheds light on dim areas. With a streamlined design, this replacement light is the ideal option to lock out moisture while maintaining a high level of visibility. Fashioned with a sealed body and housing-to-truck gasket to prevent corrosion or other damage. FleetPride is your First Click in Heavy Duty®.