Bought to use as a replacement for the train and tank horn compressor on my truck. I've been using it for 4 months now and it still works like new. It fills up quickly, about 60 seconds, and doesn't leak. It's also small enough to fit in a truck's toolbox, but big enough to deliver plenty of air. There is a safety valve on the side if you want to deflate manually. It works great with this setup as I'm sure there are many uses for it. Good solid construction, reliable.