Urban Prefer Stand up Edgy Stapler-white Unique twin lever mechanism cuts stapling efforts up to 60%!Suit for NO.10 Staples :8.4*5 mm Top loads 100 staples with up to 35 sheet capacity, which heights 3.3mm. Staples clinch flat therefore paper stacks neatly and evenly, reducing 30% height of the document. For safety and handy use, just pressing the back end button of the stapler when refilling. Pin groove will eject from back side, to avoid the danger of getting hurt from opening the stapler.