These swan neck mirrors are made of polished stainless steel to resist corrosion and both have a flat 4" mirror. Sold as a pair. Polished stainless steel resists corrosion.
Mr. Gasket 8218GMRG 4 Inch Swan Neck Mirror Stainless
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Mr Gasket 5960 Gasket Material Sheet Gasket Material, Exhaust. Steel 1/16"x10x10