Above is a magnified photo of a common type of rock chip. this is a combination break showing a bull’s eye and a star break. Magnification show many micro-cracks that extend out in all directions. Without magnification the damage may appear less extensive giving the impression that it does not need immediate attention. One significant bump or extreme changes in temperature can easily cause this rock chip to crack out. The “legs” extending outward are unstable and can easily spread resulting in a costly windshield replacement. If the damage is repaired soon after it occurs, the resin injected into the damage area will totally fill the break structurally restoring the windshield to pre-damage condition. The visible damaged area will be enhanced between 75 – 95%. The sooner the repair is made the better the results.