Equip your semi truck to be Ready for the Road Ahead , with the Truck-Lite 2" 30-Series Round 1-Incandescent Marker / Clearance Light, a crucial component for reliable safety lighting. Due to its strong output that provides high visibility, this replacement light enhances vehicle safety in all types of conditions. Manufactured with a durable polycarbonate lens to resist heat and impact damage. FleetPride is your First Click in Heavy Duty .