Adjustable three-hole punch drills through 34 sheets of 16 lb. paper or 28 sheets of 20 lb. paper. Design offers heavy-duty steel construction, adjustable paper guide, measurement scale and lever action for easy punching. Removable chip tray collects chads for easy disposal. Fully adjustable punch heads allow paper sizes up to 15". Scuff-resistant and slip-resistant rubber feet keep the hole punch in place.