Heavy-duty, three-hole punch drills up to 40 sheets of standard 20 lb. paper. 9/32" punch is preset to punch three-hole pattern for three-ring binders. Built-in paper guide ensures perfect positioning. Oversized handle allows easy open-handed punching & locks down for storage & safety. Nonskid base offers added stability. Hole-punch also offers a large-capacity waste tray & heavy-gauge steel construction.