Rapid Duax Heavy-duty Stapler handles the work of two with a jam-free system and flat-cinch system. With one special Rapid Duax metal alloy staple, the Duax is equipped with the power to staple 170 sheets and the precision to staple two sheets of paper and every size in between. Stapler automatically senses the depth of each paper stack and cuts the legs of the DUAX staple to the exact length needed. Stapler offers a flat-clinch mechanism and easy front-loading. Ergonomic design delivers effortless stapling. Stapler holds and includes 400 DUAX staples.