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The original Cobras had a thinner skin. The Kirkhams have an alloy used on
MIGs or other Russian aircraft that is a bit thicker and a lot stronger. Granted,
not as strong as steel but I have had mine for over 3 years and a few thousand
miles and don't worry about it. Cleaning is using Windex and paper towels (or
old diapers) and an occasional rub with scotchbrite as needed for finger prints.
Mine is brushed and I wouldn't have it any other way.
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