- Max. Punching Capacity :   300 sheets of 75gsm(20lb) paper - Punching : Manual - Diameter of hole :   3.0~8.0mm (standard : 8.0mm Dia.) - Available Hole Patterns :   2Holes : 80mm (3 1/8”)   3Holes : 108mm (4 1/4”)   4Holes : 80mm (3 1/8”) - Back Margin : 3~14mm - Ideal :   Copy Center, Accounting   Department, School,   Government Office, Print Shop,   Graphic Center            Our product of the workstation designed  specifically for binding works,  Model No. SWS-0500, is recommendable.