Swingline Electric 3 Hole Punch, Medium Duty Hole Puncher, 50 Sheet Punch Capacity, 350MD, Gray (9800350) ELECTRIC EFFICIENCY  Easy to use, electric 3-hole punch is an excellent choice for high volume jobs and commercial use. Intuitive design makes it easy to operate. JAM RESISTANT  Built-in jam reverse switch ensures trouble-free service. Great for powering through large projects. PUSH BUTTON START  Simple push-button electric start and left justified paper guide allow for easy punching. 50-SHEET CAPACITY  Punches through as many as 50 sheets of paper. Creates precise 9/32" holes and 8-1/2" centers. LESS MESS  Cleanup of punched holes is simple with a base tray that holds punched paper until you have the chance to empty it. Clear viewing window lets you see when the tray is full. BUILT TO LAST  Swingline stands behind this high-quality, dark gray punch with a limited 2-year warranty.