Specially used for fixing four eyelets / rivets on lever arch file, file folder briefcases, clipboards etc.
*For riveting of four eyelets on the paper file folder,notebook,wall calendar.
*Holes pre-punched is not necessary.
*The distance between eyelets can be fixed & adjustable.
* Driven by a servo motor, it is energy-saving, environmentally friendly, quiet, and reliable with no faults.