These hinges are an exact match (including thickness) for the common cast iron hinge used about 1880 to 1910. A material with a long history and many applications, cast iron adds a historic charm with its vintage beauty. These cast iron hinges are from Australian manufacturer, Tradco Hardware, to complement their black door handles. Like the handles, the cast iron hinges are coated with a rustic black finish and then lacquered. Regular applications of Mr Sheen with a soft, dry cloth will help maintain the finish.