Horseshoes are U-shaped metal pieces traditionally made of iron or steel, designed to protect a horse's hooves. They are attached to the hooves using nails and help prevent wear and injury while providing traction on various surfaces. Horseshoes come in different sizes and styles, depending on the horse's needs and the type of work it performs. The practice of shoeing horses dates back thousands of years and is often associated with blacksmiths, who craft and fit the shoes. In addition to their practical use, horseshoes are also considered symbols of good luck in many cultures, often hung above doorways to ward off evil spirits.