Your Corvette's windshield and windows are exposed to harsh contaminants, even on a sunny summer cruise. Run your fingers over the glass - if it doesn't feel as slick as ice, it needs claying. Glass Cleaning Clay is the perfect glass prep before polishing or for simply removing pesky imperfections. This clay bar also works on a variety of smooth, hard surfaces such as glass shower doors, chrome, stone, ceramic tiles, synthetic stone, and quartz surfaces.