Flat clinch feature enables you to staple 2 to 70 sheets without changing the staple. Super-quiet operation. For heavy-duty commercial and office use. Select auto or manual stapling for perfect positioning of staple every time. Includes easy snap in cartridge. Heavy-duty stapler offers flat clinch and 1/8″ to 3/4″ throat depth. Staples 5,000 times continuously. Uses staple cartridges with staples that have a 1/2″ crown and 5/16″ leg length.