This product may look sturdy at first glance, but as my tests showed, it is far from it. The parallel clamp is flimsy and unreliable, and I had constant difficulty keeping my workpiece secure. The design is faulty and not up to industrial and scientific standards. The only pro is that it's lightweight, but that doesn't make up for the lack of functionality. Overall, I would not recommend this product for anyone in need of a reliable workholding clamp.