Important issues, such as the increased popularity of clad wheels on new vehicles, demonstrated that there is a need for a better alternative than steel or zinc. Plasteel is a world first - a steel core wheel weight encased in a plastic outer shell. Engineered using forward thinking technology, Plasteel is setting new standards for innovation in the industry. Fits Many brands like Buick, Chevrolet, Chrysler, Dodge, Ford, Mazda, Oldsmobile, Pontiac & Saturn.