Sheet metal benders are tools or machines used to shape and form flat sheets of metal into various angles and curves. They work by applying force to the metal, allowing it to bend without breaking. These devices are essential in industries like construction, automotive, and manufacturing, where precise metal shapes are required. There are different types of sheet metal benders, including manual and hydraulic models. Manual benders require physical effort to operate, while hydraulic benders use fluid pressure for easier and more powerful bending. Both types are crucial for creating components like brackets, frames, and enclosures in various applications.