I love the thumbscrew at the bottom! I was a pipe welder for thirty-five years and I hated the folding stands because they were not as stable as the ridgid stands. This thumbscrew fixes that. For convenience, I also love the carrying handle. That said, if I could have found an American product (Sumner) I would have spent the extra $30 each to buy American, but it was too late at that point. I need about four more, so next time.