This product from the Industrial and Scientific category is a must-have for all woodworking professionals. As a result of my tests, I determined that this workholding tool is the most sturdy in the market. It's made of TOUGH nylon that guarantees its durability for a long period of time... The fixed spring also ensures that your woodwork stays in place all throughout the process. The only con I could see is that it might not work for all sizes of woodwork, but overall, it performs great in its niche. Definitely a great addition to anyone`s toolset!