- duty commercial binding machine for high volume use. Offers effortless foot pedal operation for maximum ease of use. Electrically punches up to 30 sheets at a time and binds documents as large as 500 sheets with a 2” comb. Adjustable punch depth for extra large documents. Adjustable edge guide centers documents with ease. 21 releasable dies can handle a variety of document sizes up to 12” wide. Durable all metal construction. Extra-large storage tray with convenient front access.