1.Thickness to be bound from 2 to 15 sheets ; 2.Adjustable maximum even side depth of paper: 100mm; 3.A single or multiple binders in series synchronous are workable; 4.Come with one safety foot pat 5.Power: 220V 50Hz, 110V 60Hz-30W; 6.Colour:white. 7.Size: 51×31×55(cm); 8.Quantity: 4 sets in Carton; 9.Net weight:22.5(kg). 10.Gross weight:25(kg). 11.Special book binding:66/6,66/8. 12.A single or multiple binders in series synchronous are workable; limited space occupied, helping increasing work efficiency