Provide your semi truck with reliable safety lighting, with the Truck-Lite 2.54" 10 Series Round 1-Incandescent Marker / Clearance Light that ensures you're Ready for the Road Ahead. To enhance vehicle safety, this replacement light provides high visibility in all types of conditions. Constructed with a durable polycarbonate lens for improved resistance to high temperatures and impacts. FleetPride is your First Click in Heavy Duty.