The tolerances on this one are very rough and the edges are not all sharp but it works and this type of tool is good for longer cuts. in sheet metal, with the sheet metal being held flat. It's not the right choice if you're looking for a quality tool, but if you want something that works well at a great price, this is an acceptable choice. Don't expect the edges to fit well out of the box. I just clamped it in a vise so they fit together better and it definitely got better, but not as good as I would like.