I use these on a daily basis

These clamps are great for the work I do at my construction sight when holding panels together in order to get corner clips and extrusions onto the flanges. the slender nose fits well into tight areas and the easy release makes undoing them simple with one hand. My biggest issues that I have with them is that after having used the set I have for the past year the grips have broken off and continue to slide off. I have actually lost the grips for one of my pairs. Second to that is the fact that if I am not holding them while drilling, which happens fairly often if the extrusion is long enough, the vibration of the drill has caused the clamp to unlock itself and fall to the floor. Great product overall, just be warned of the couple small flaws.