A bar bending machine is used in construction to bend steel reinforcement bars (rebar) into precise angles and shapes. It features a rotating bending disc, control panel, and clamping devices. The machine allows for quick, consistent, and accurate bends, such as right angles, U-bends, and stirrups, which are essential for reinforcing concrete structures. Safety features include emergency stops and guards. It significantly increases productivity and reduces manual labor in construction projects.