I bought 4 pieces for a promotion, but after the purchase I realized that for 95% of tasks two or even one would be enough. A must have, I recommend! With its pros: Solid and high-quality clamp, you feel that you are swinging a thing. Nothing sticks or wedges, very comfortable handle. Thought out to the smallest detail: There are additional protrusions so that the workpieces hold better (although they could have been made more). Holes for mounting on a workbench, two on one part of the clamp, two on the other, this allows you to use the clamp as your heart desires. You can fasten workpieces that are thick enough and with different thicknesses. Can be fastened at an angle of 90, T-shaped joint and in parallel. Comes with a plastic piece that allows you to hang the clamp on the wall. Has some cons: I know how to look for flaws, but I did not find it. It may seem heavy to someone, but here it’s either quality or weight.