The Swingline Medium Duty Electric Punch SWI9800350 is designed for efficient three-hole punching. It drills 9/32" holes through up to 50 sheets of 20 lb. paper with the push of a button, making it a convenient tool for any office setting. The built-in jam reverse function ensures smooth operation, enhancing productivity. A clear window on the punch chip tray provides instant visibility when it's time to empty, and the tray slides out easily for hassle-free maintenance.