Heavy-duty Novus B 54/3 stapler that can staple up to 170 sheets: For professional use with up to 170 sheets of paper weighing 80 g/m2, this heavy-duty stapler has been tried and tested. It has an extra-large insertion depth. It is compatible with staples of types 23/8 to 23/20 SUPER. You can insert up to 100 staples. device made entirely of metal with a plastic shell To staple in the fold, use parallel stapling.