Get your semi truck's wheels Ready for the Road Ahead™ with enhanced protection against dust, debris, and oil, with the Stemco Defender™ Composite Hub Cap. By attaching to the external frame of a wheel, this removable hub cap protects the lug nuts, bolts, and axles from harmful roadside materials. Built with sturdy metals and a simplified design for an easy-to-install or remove procedure. FleetPride is your First Click in Heavy Duty®.