Iron Ring Binding Machine 40 Holes Heavy-duty Calendar Square Hole Puncher Desk Calendar Frame Gray Cardboard TD-2500 ,Pinpoint Punching

Applicable consumables: double iron ring Number of handles: 2 Applicable paper: F4 (33cm) Pressure ring size range: 4.8mm-28mm Punch ability: 25 sheets of 80 grams of paper, 4 sheets of film