This is a simple, cheap, but very well designed holder for your airbrush. The bracket is steel and the holders themselves are hard plastic, so they shouldn't scratch your airbrush. The bracket is designed to attach to your air compressor, but with minor modifications can be mounted nearly anywhere. There is one tiny issue some may have. The parts that hold holders to the bracket are simple nuts and bolts. On mine, the left one nice and tight, but the right one was free-spinning. Upon investigation, I found that the company had uses a defective nut that didn't actually have threads! They simply used a blue adhesive like Loctite to keep the nut attached to the bolt, but didn't bother tightening it up first. It is impossible to tighten up because of this, so I had to resort to using my own super glue to keep the right holder from free spinning. It was a simple fix, but something that should have never left the factory! Conclusion: Very cheap and effective solution for people that use multiple airbuses for projects.