Revain itself irresponsibly packaged (too much weight in the box which fell apart and ended up being returned to sender) the first set on the first order made by Amazon, At the second, installed directly by CMS Magnetics, there was confusion as to the number of magnets supplied, but an email to the company quickly cleared up the confusion. I would recommend ordering direct from the company but they are reasonably priced, strong enough and have sufficient magnetic field lines to demonstrate the coverage they were purchased for.
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