To start with, the mags work great and are crazy strong for their size. That noted, the sticky pads are pretty worthless and the foam will literally tear apart under load. Even the "extreme" foam tape wouldn't hold and I ended up using epoxy. (horizontally mounted spice jars). Mags good, pads not so much. To give 3M their due, the foam failed, but not the adhesive which was a real pain to remove.
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