Was on my way home from base this morning and got my first rock chip in the windshield :x. I was so pissed, I saw it coming too. A semi truck was going the other direction and I saw this rock out of the corner of my eye and it smacked the window, so I have a chip right in front of the drivers view. Only 1500 miles on the car and I was looking at paying the deductable for a new window. But then I thought, maybe I'll just buy one of those repair kits this weekend and take care of it. After driving a few more miles I noticed small cracks appearing and beginning to spread. Time to take evasive action, I turned around headed straight back to base and bought a kit. I wanted to fix it before it spread. I had to wait till I got home to fix it. It was one of those syringe kits, I am shocked at how well it worked. Took 4 hours to dry, but it worked. The surface is smooth and the color matches perfectly, not yellow or cloudy. Although due to the type of the chip, it is still barely visible, but the cracks are gone and the window is saved. I highly recommend having one of these kits on hand. I'm buying another one just to keep it handy. Long story short, a $20 chip repair kit is much cheaper than paying a $500 deductable.