I bought these to hang signs on pallet racks. I created the signs from laminated printed paper and was hoping to use these holders to hold them in place. My laminated paper wasn't thick enough to fit snugly in these holders, but that can easily be remedied by adding a few labels (cut to size for the gripping portion of the holders). Works perfectly! I've run into the signs with forklifts and even hit them a few times as I was walking by and they haven't gone away. Some other reviews have mentioned the weakness of the band between the magnet and the gripping part, but mine has been excellent so far. I am very satisfied with the purchase in every respect.