This extremely powerful electric Prima opera 35 comb binding machine punch binding machine offers maximum punching power of 25 sheets. Matching the perforation to the paper sizes (A4, A5, and Letter) is achieved by simply disengaging the relevant punch pins. Features adjustable margin control and a handy selector gauge to measure which size plastic comb you require. Opera 35 comes with additional foot pedal. A stylish, modern design to fit well into today’s professional office.