They are excellent for stopping pin hole leaks in radiator hoses. I was a communication technician for the oil field, and would travel in very remote areas. My service van started getting hot one summer afternoon. My hose was shooting a stream of hot liquid. Now mind you these were the large ty raps but I stopped the leak with only one. I then drove over fifty miles to the next town and the hose was still sealed. To me, this is a don't leave home without it item.<br><br>Regards <br>Bruce<br><br><br><br>