Plastic Punch-Bind Machine, 24 holes (1-24 holes) machine equipped with double handles. Punch pages can be loaded directly onto the opened comb for Faster binding. Punches up to 25 sheets at one time and binds up to 500 sheets, Selectable Punch Pins, All metal chassis and mechanism, With comb binding controller, With international standard hole scale, Binding performance: 500 books hour,International Comb size ruler, Adjustable Paper Size Guide, With punching margin depth controller, Punching performance: 7000 sheets hour, Punching width : 340 mm (A4, foolscap).