I've had these posts and a set from Basic Grey. The BG magnets began to peel...which left little metal shards and jagged edges to scratch my photos. NOT happy!
We R Memory Keepers Magnetic Posts are MUCH BETTER. They are rectangular in shape with rounded edges...makes them easy to pick up. They are strong and this set of 9 is just enough to hold down a 12x12. More importantly...NO PEELING.
These are the only ones I'll buy (as I continue to replace what the kids take).
These work just as intended. They adhere items to the magnetic scrapping mat and allow you to adjust and reposition until you are satisfied with placement. An back ordering more. They are fun to play with too!