No more chip spills! Designed for creating uniform holes in sheets of paper for easy binding and organization. Get clean, accurate punctures with this heavy-duty punch. The three-hole design makes it easy to prepare documents for most binders, clasp folders and other binding systems, while the visible chip window keeps you aware of build-up, so you can dispose of chips as needed. Sheet Capacity: 45; Operating Method: Manual; Number of Holes: 3; Hole Diameter: 0.25".