DetailsPunches cleaner, easier and absolutely no jamming. Low force design makes this punch 50% easier to use than standard hole punches. Punches through up to 20 sheets of paper with advanced cutting dies. Contains PaperPro's ? jam-free technology. Handle locks in down position for easier storage. Internal waste chamber with easy-to-empty rear positioned door. Convenient paper guide. Sheet Capacity: 20; Operating Method: Manual; Number of Holes: 3; Hole Diameter: 9/32".