We received broken from warehouse the first time and had to send back. We received again and it did NOT punch holes through all of the paper. We tried adjusting metal cutters and that did not help. We applied extreme pressure to the handle (which you aren't supposed to do)..that didn't work. Holes would only punch through half of the stack or punch through one or two holes completely and the third hole would only partially punch through. Very Frustrating, especially for the money you pay for it! We ordered another brand of heavy duty brand hole punch after this one with same exact results! You are better off buying a light or medium duty hole punch, which works so much better than this monstrosity! Don't waste your money.