We are offering obsa400automatic spiral coil binding machine features:fully automatic paper punching, spiral coil forming and inserting, book binding and collection;ideal for single spiral book, sketch book, student notebook etc; technical data:max binding size: 400mm(punching) x 500mm;min binding size: 120mm(punching) x 80mm;binding thickness: 516-34;binding speed: 500-1800books;weight: 900kgs;air pressure: 5-8bar;power:220v50-60hzphase 2;machine size: 2500mm x 980mm x 1750mm (wlh).