Metal bar stools are manufactured from iron, steel or aluminum. Seats for the metal bar stools in many cases can be a choice of wood, metal or upholstery. A metal bar stool is also called an iron bar stool. In a wide variety of styles, iron bar stools are also available as metal counter stools and metal bar stools. Metal counter height stools have seats that measure 26 inches from floor to seat. Metal bar height stools are slightly higher with seats measuring 30 inches from floor to seat.