The HD-7000 is a 14 inch (356 mm) open-ended punch that features the patented "quick change" die system for changing punch patterns in 30 seconds; no tools required and no bolts or screws to replace or misplace. The 7000 was designed with the operator in mind, offering quick, easy set-up including easy pin pulls and pre-set paper stop positions. With a full year's warranty on both machine and the dies, this is truly the industry standard. You need look no further for the best. Punching capacity depends on the punch pattern being used. Rated at 25 to 40 sheets or up to 80 pages of 20 pound bond paper (80 gsm). (15,000 - 18,000 sheets/hour).