Estune Blueprint Hanging Clamps Binding Strips Storage for Construction Paper Poster Plans Drawings Arts (6, 24 Inches)

They work great for holding larger pieces of paper. I am actually using mine to hold fabrics for Photo Booth backdrops. They are a great solution for that purpose.

I was sort of hoping they were set up a little different, but there was very little info and no reviews, so here goes... They are 2 long pieces of aluminum that come together at one side with 2 finger clamps (round, easy to turn, well designed knobs). The motion is smooth and the grip is very tight. The blueprints/photos would never fall out. My only issue is that they aren't a lot of good for multiple papers, unless you lay it down to remove/add them, just because one would fall out when you loosen it for the other. I may try to find a way to modify them for use with my own system, as they are well made. I was hoping for something that would be better for photo developers, where I could just stick an order up into it and it would stay there until I pulled it down, maybe with a single button/clip release.