Hand-operated press machine, often called a grommet or button press.Versatility: These machines are designed for industrial or home use to attach various fasteners like eyelets, grommets, and snap buttons.Interchangeable Dies: The specific function depends on the interchangeable die sets (dices) installed, which must match the size and type of the fastener being used.Applications: They are commonly used in fashion design and repair to add fasteners to garments, belts, bags, and shoes.