I have been using F clamps for many years, but only heavy or light C clamps. These lighter F-Clamps are great for small jobs that don't require a large, heavy clamp. F-clamps are also much easier to use than regular C-clamps because you can slide the bottom of the clamp into place and then just tighten as you work rather than turning the screw all the way. Many thanks to Wilton for manufacturing quality clamps in a variety of sizes and capacities.