The Sterling® Digipunch® is an economical high speed punch designed for short run binderies as well as digital and commercial printers. The machine allows for punching up to 72,000 sheets per hour! That's a big pile of paper for a small machine and a half million sheets per shift. The Sterling® Digipunch® features a variable pile lift, which allows for slowing the machine down for difficult jobs, such as stock that is curled, stock with static, or acetate. Punch sheets with covers or tabs intermixed.