Product Details: Ensuring Expertise Built In™, the OTR 66” Polyethylene Tandem Fender offers enhanced wheel protection. To safeguard the axle and metallic components from rust, corrosion, and other damage, these replacement poly fenders create an exterior cover around the wheel. Designed with resilient polyethylene materials to endure the wear and tear of everyday working conditions. FleetPride is your First Click in Heavy Duty®.