They are very simple and work great but anyone can make them in their home business. I don't have a store so I had to buy. They're so simple that a quick deburring of the edges would take about 10 seconds, but that wasn't done here. In fact, the Stickvise product itself had many scratches due to the wrong attempt at tapping, which are hidden when the soft sponges are put on. Not a big deal but a big disappointment at the quality you would expect from something at this price point.