This clamp is just what I needed for my workshop. As my tests showed, it held everything in place firmly without any slipping.The copper material is sturdy and durable making it perfect for industrial and scientific work. The F shape design allows FOR easy maneuvering, and the screw is smooth and easy to adjust. The only downside is that it's a bit heavier than other clamps I've used, but that's a minor issue considering its effectiveness. Overall, it's a great addition to my workholding tools…