This is one of those tools that does positive things to your psyche. I suggest buying a dust shroud as well. In short...I was smiling, grunting, and feeling pretty darn powerful while operating this grinder. After hours of trying various methods to remove paint from concrete to prepare for tile (Larry, Steel brush cup grinder, torch and scraper) I bought this brush and put it on my grinder. If you want a tool that gets the job done and does it right....this tool is it.