Equip your semi truck's wheels to be Ready for the Road Ahead™, with the Hendrickson PRO HP Grease 6-Hole Dual Tire Hub Cap, a key component that protects against oil, debris, and dust. 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®.