Being a woodworking hobiest making a value judgement on a  product is somewhat difficult so take this review for what it's worth. The set came early and in good condition. I was impressed with the quality of the blades and their high polished look.. As I looked through the instructions I found them a little confusing as they are written in tiny print on a sticker afixed to the case and in multiple languages. The case itself is plastic, stury enough but probably the weakest component and does have a higher potential for breakage. The set comes with spacers when added to the stack, make fine adjustments to the size of cuts. Beyond that the setup is pretty simple and straightforward. I made a couple of test cuts on pine, plywood and maple and the blades cut through each like butter and measured accurately. Can't say anything about blade durability but for my purposes I suspect they will last many years. I reccomend them for novice woodworkers. You professionals and experts will have to make up your own minds.