WW2018 Iron Ring (3: 1) & Iron Ring (2: 1) Large Floor Multi-Function Binding Machine 2 In One Office Desktop Binding Machine ,Easy to Operate

Punching capacity: 20 sheets Number of holes: 40 (3: 1), 27 (2: 1) Paper size: F4 / A4 / B5 / A5 Margin: 2.5 / 4.5 / 6.6mm Hole distance: 8.47mm (iron ring 3: 1), 12.7mm (iron ring 2: 1)