Offering the broadest professional repair capabilities in the glass restoration business, the Scratch Hog glass scratch repair kits with center water feed removes everything from heavy scratches and graffiti, up to .015 of an inch, to the lightest surface and hard water damage. The effectiveness of this system is unmatched. ASTM tested and passed to the most extreme criteria. Proven to achieve distortion free results while strengthen the glass. No magic claims, no smoke and mirrors, just results.