Old Mountain Cast Iron Pre-seasoned Fajita Set Cookwares Kitchenwares by Old Mountain. $36.00. Kitchens; Old Mountain Cast Iron Cookware. Old Mountain Fajita Set - Pre-seasoned and measures 15" including handle. 9.5"x7" oval x .5" deep and comes with wooden hot plate and pot holder that fits perfectly the handle! What a perfect way to serve not only fajita's but any skillet food! Made of cast iron and comes with the Old Mountain care instructions.