Maximum Punching Width: 11.8″ (300mm) Punching Thickness: 25 sheets Pitch: 4:1 (6.287mm) Oval hole Disengagement Punch Pins: 47 Number of Punch Pins: 47 Binding Thickness 180 sheets Side Margin adjustable Aluminum construction Manual PC300 coil / wire binding machine, punch capacity up to 16 to 25 sheets at a time, with handlebar that allows right hand operation, machine having 47 Punch 4:1 Pins.