Prepare your semi truck to be Ready for the Road Ahead™, with the Truck-Lite 2" 21 Series Rectangular 1-LED Marker / Clearance Light that supplies reliable safety lighting. With a strong output, this replacement light enhances vehicle safety in all types of climates and conditions by providing high visibility. Crafted with a durable polycarbonate lens for advanced heat and impact resistance. FleetPride is your First Click in Heavy Duty®.