First air grinder I ordered with my new air compressor. Very happy with it. I ordered an air compressor but decided on more of a whim as I have several grinders and wasn't sure I would ever need one. However, I wanted to use it with a compressor. It works very well, has variable power and is suitable for 5 inch sandpaper discs. So I'm very happy with that. I needed to find something that could be sanded down to try and I sanded down an old treasure chest that was about to disappear. Worked fast and I was able to apply a lot of pressure and the wheel was still spinning. Nice grinder, looking forward to using it on my next project.