An **iron rod** is a long, solid piece of iron, typically used in construction, reinforcement, and various industrial applications. Iron rods are known for their strength, durability, and versatility. They are commonly used as reinforcement bars (rebar) in concrete structures, providing tensile strength to prevent cracking and improve the structural integrity of buildings, bridges, and other constructions. Iron rods can also be found in machinery, tools, and as components in various mechanical systems. Depending on their use, they are available in various thicknesses and lengths, often treated or coated to resist corrosion and wear.