Punches and dies are tools used to form metal parts by forcing the metal between them to create a shape. Punches are typically cylindrical, and dies are molds that produce a specific shape in the metal. Punches typically have a cutting edge on them, while dies feature profiles that create holes, slots, or other features in the part. Punches and dies are used by press machines to force the material through them and create the desired shape. Cold and hot forming processes are typically used to shape the metal parts with punches and dies.