The Professional Glass Polishing System by Lake Country polishes, smoothes, and restores perfect clarity to imperfect automotive glass. This two step system removes hairline scratches, films, and wiper tracks and then seals the glass to maintain optical clarity. Safer, smoother glass is just two steps away! Glass imperfections are easy to get but hard to remove. As youre driving down the highway, you can hear sand and bugs hitting the windshield, particularly in industrial areas where it seems construction is always ongoing. Lake Countrys Professional Glass Polishing System removes the fine scratches, the tiny abrasions, and the etchings and you dont even have to pay a professional. The Professional Glass Polishing System works with your Porter Cable 7424 or other dual action polisher, or a circular polisher to eliminate automotive glass imperfections in just a few minutes. Performed as directed, you will not get optical distortion or waves; just clear, smooth glass.