Equip your semi truck's wheels to be Ready for the Road Ahead , with the SKF CR Scotseal 6-Bolt Steel Hub Cap, a key component that protects against oil, debris, and dust. With an exterior cover that deflects damage from harmful roadside materials, this removable hub cap is the ideal choice to protect a wheel's 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 .