Product Details: The Roadmaster 5/8" Stud Rear Hub Cap is the perfect replacement for your worn-out or damaged hub caps. These screw-on caps are available in either aluminum or hi-impact poly, and come with a plug and gasket or O-ring for a secure fit. The poly caps also come with a vented plug and hub odometer-ready feature, while the aluminum caps come with hi-impact poly windows for easy viewing of the hub odometer. This is an approved genuine OEM replacement product, so you can be sure you're getting the highest quality product. FleetPride is your First Click in Heavy Duty®.