These are terrific push pins for magnetic bulletin boards - especially the ones that come with Ikea furniture. They are very strong and hold up multiple pieces of paper or cardboard with one push pin. I have brushed by the paper and it has not fallen down. The push pin held the paper in place. They also come in very lively bright colors which make them attractive to the eye and are good for organizing. Also they are small enough that they do not block the text on your document like big block magnets.
They look very similar to a push pin thumb tack so they are easy to get ahold of to remove from board or whatever metal surface you use. I did a strength test on the side of a Hon steel filing cabinet. I used one magnet & 20 lb 8 1/2 x 11 plain bond paper. 9 sheets held well 10 OK but seemed a little weak 11 slid down. I don't usually get excited about office supplies but I love these.