Outfit your semi truck's wheels to be Ready for the Road Ahead with enhanced protection against dust, debris, and oil, with the Stemco 4-Hole Traditional Hub Cap. To prevent damage to a wheel's lug nuts, bolts, and axles, this removable hub cap attaches to the frame to guard against 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 .