Picked up a big nail in my rear tire. I was able to plug it, added some air and rode home. So far its holding the correct pressure. I have carried this plug kit and air compressor for over 20 years and today was the 1st time I've had to use it. I am really glad it had it with me, plus the fact it happened on a rural country road with very little traffic. The tire has less than 1000 miles on it so I guess I'm going to continue to run it unless it starts losing air. The puncture was almost dead center.