I've been using tiny (dime size) magnets to find studs, which can scratch the wall if you're not careful. It's also sometimes hard to find the nails that way. This magnet zeroed in on a nail about 2-3 inches away! Wish I'd had one years ago.
60X10X3Mm Neodymium Bar Magnets 25 Pack - Strong Permanent Rare Earth Magnet With Double-Sided Adhesive For Craft, Fridge, Kitchen And Office.
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