- Max. Punching Capacity : 300 sheets of 75gsm(20lb) paper - Equipped with high-tech hollowed punching bits - Diameter of hole: 3.0~8.0mm - Back Margin : 0~35mm - 4 hole punching available (A4, 80mm x 4 hole) - Ideal : Accounting Department, Office, Copy Shop, Print Shop, Graphic Center,            Paper Craft Shop        Our product of the workstation designed  specifically for binding works,  Model No. SWS-0500, is recommendable.