I use this tool a lot for work as I need to drill holes in new cars to live anywhere from 1/4" to 3". This is a great little tool for deburring steel and aluminum. I have only had one blade since I bought it at least 6 months ago. It's a bit boring, but it still works. Oddly enough, the blade always worked better in one direction than the other. The blades are not broken, the tool has not fallen apart, the blades are fixed with a spring washer. Can't win for money.