Bests & Worsts Reviews from Amazon

We had bought several 14 pc sets and use these in an industrial environment and switch out air tools several times a day on an air line. After about a month we noticed that they started leaking air due to wear on the male coupling. After looking at them they are made of aluminum instead of the steel. They would probably good for the hobby guy that doesnt use air that much, but if you swap out tools on your airline often expect them to wear fast and start leaking air. I We won't be buying them again.