The Globetech 24" x 30" Extreme Duty Mud Flaps Extreme Duty Mud Flaps ensures you are Ready for the Road Ahead™, defending heavy duty trucks against destructive elements and hazards on the roadway, such as rocks, water, mud, salt, and ice-melting properties. The mud flaps also protect the undercarriage from potential damage. FleetPride is your First Click in Heavy Duty®.