Perforating machine with the ability to switch types of knives (plastic spiral, wire 3:1, wire 2:1, wire 3:1, and hole for hanging calendars) A4. 

• Ability to perforate electrically with a button or pedal, from 25 to 30 sheets of 80g depending on the type of knives. 
• Features 4-position depth adjustment for the plastic spiral knife block. 
• Metal...