Ensure your semi truck's wheels are Ready for the Road Ahead with enhanced protection against oil, dust, and debris, with the Stemco Grease/Oil Screw On Hub Cap. Thanks to its exterior cover that shields against harmful roadside materials, this removable hub cap is the ideal choice to guard a wheel's lug nuts, bolts, and axles. Fashioned with durable metals and an ergonomic design for an easy-to-install or remove process. FleetPride is your First Click in Heavy Duty .