Product Details: Update your semi truck's wheels with enhanced protection against dust, debris, and oil, with the Stemco Grease/Oil 6-Hole Hub Cap that ensures you're Ready for the Road Ahead™. This removable hub cap covers a wheel's exterior, to prevent harmful roadside materials from causing damage to the lug nuts, bolts, and axles. Manufactured with heavy-duty metals and a simplified design for an easy-to-install or remove process. FleetPride is your First Click in Heavy Duty®.