I have a couple of these clamps as well as the quick grip bar clamps and C clamps and spring clamps. They all have their perfect uses. These handi clamps are great for what I use them for, which is to hold materials together. I have used it to keep cabinet faces tight while installing screws (not to support the weight), for jigs that will not suffer a great deal of lateral pressure, holding drawer box faces flush while installing runners...etc.