The 40A file electric three-hole machine can punch 500 sheets of paper at a time.

Product Name: Electric Three-Hole Punching Machine
Model: QY-40A
Binding Thickness: 40mm
Hole Pitch: 83mm
Paper Feed Depth: Free (Center Punching Capable)
Machine Dimensions: 470*390*390mm
Hole Diameter: 4mm (1.5-5mm Optional)
Gross Weight: 24kg
Paper Feed Width: 330mm (Adjustable Margin)
Table Dimensions: 470*390mm