They are scrubbed by hand using dish liquid, stainless steel scouring pads, stainless steel brushes, and magic erasers under cold water to bring them back to the bare metal finish. Finally, all pieces are run through three rounds of seasoning using vegetable shortening. Cast iron cookware will last hundreds of years and generations if properly taken care of.These are beautiful, heirloom quality pieces made right here in the USA. Will be bubble wrapped and surrounded by packing material to ensure that they don't shift in transit. They are not making cookware like this anymore, and I would consider it tragic if anything were to happen to these in transit. Just contact me before to make sure we can make arrangements that work for both of us and I'll add the option to the listing. If you have any questions, need additional pictures, or anything else please message me. Thank you for viewing this listing.