As an Industrial and Scientific equipment enthusiast, I found this VARIABLE grinder to be a game-changer... It is incredibly powerful, yet easy to maneuver, allowing you to accomplish the task at hand with ease. The adjustable speed control is perfect for handling any job of any size, and the ergonomic design makes it comfortable to use for extended periods. As a result of my tests, i determined that this Industrial Power Tool is worth every penny. The only con is that it produces quite a bit of noise, but that can be managed with ear protection..