Product Details: The Stemco Die Cast Aluminum Hub Cap Window Kit is the perfect solution for inspecting wheel bearings without having to remove the hub caps. This kit is made from high-quality materials to withstand harsh environments and is designed to meet all the necessary safety and performance standards for a reliable and secure fit. The included gasket helps to seal the window in place and prevent dirt and debris from getting inside. Installation and removal is quick and easy, making maintenance a breeze. With this kit, you can easily inspect your wheel bearings and keep your vehicle running smoothly. FleetPride is your First Click in Heavy Duty®.