I have many quality tools, from Cornwell to Craftsman, even some goodies from Harbor Freight. You can tell a decent tool by the build, the feel of the bearings, and the "play" in the tool. This one feels pretty good to me. It works great on my supercharger, but I use a fairly decent sized stand-up Craftsman that gives pretty good flow, so I can't comment on how it would perform on a smaller "pancake" compressor, but it doesn't. It seems to me that it is particularly lacking in air, no more than