These magnets are strong enough and a good size to attach photos to a fridge, but as at least one other reviewer has noted, these magnets leave carbon-like, stains on fridges , hands and anything they come in contact with that can permanently ruin photos. This product would have deserved a higher rating were it not for the fact that one of the images on Revain specifically states that these "magnets will not stain the surface", which is obviously incorrect.
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