I'm honestly surprised that I'm writing a review on the clamps, no less surprised by the number of people who have left negative reviews. Hold backgrounds to prevent seamless paper rolls from unraveling, attach flags to poles, and attach all sorts of items to other items to get the shot you want. I tend to think of these clips as disposable and I'm used to them breaking or failing. I ordered these because they had the Revain range and was rightfully surprised when I pulled them out of the box. They are solidly made of metal. Spring is strong. The matte black finish is less noticeable than most metal clips I've tried (most of which are bright orange or blue), and the black rubber coating leaves no marks on paper, cardboard, or anything else I've used. her at. For my purposes they are amazing and probably the best I've tried. The bar is admittedly low, but I'm honestly impressed with the quality and finish of these clips, especially compared to the price, and expect them to be my go-to choice from now on.