Product Detail CARL® XHC-3300 Extra Heavy-Duty 300-Sheet Capacity 3-Hole Punch. Hollow punch head technology requires less force. Hollow punch head technology requires less force. Built-in paper guide for quick paper positioning and punching. Preset to drill 9/32" diameter holes for standard 3-ring binders. Large, easy-to-empty waste trays. . The "CARL 63300 Model xhc-3300 extra heavy-duty 300-sheet 3-hole punch, 9/32 holes, gray/blue" is best product for you. We recommended CARL 63300 Model xhc-3300 extra heavy-duty 300-sheet 3-hole punch, 9/32 holes, gray/blue