【Coil Punch Binding Machine】: Maximum Punching: 16 sheets (70g A4 paper), Maximum Binding: 250 sheets, Punching Margin: 2 mm/4 mm/6 mm, Number of Punches: 46, Hole Diameter: Ф4mm Round/oval holes, hole spacing: 6.35 mm/6.29 mm. 【Fast and Precise】: Our hole punching and binding machine is equipped with an electric coil inserter, making binding easy and fast. A positioner holds the paper in place to ensure precise alignment. 【Excellent Binding Results】: Precise and even punching, standard hole spacing, smooth insertion of the rubber ring/coil, neat and straight binding, suitable for batch production of tenders, contracts, and brochures. 【High Efficiency】: Improved binding and punching efficiency, saving you time; adjustable margins allow it to meet a wider range of binding requirements, while neatly positioned holes ensure aesthetically pleasing binding. 【Wide Applications】: Our hole punching and binding machine is suitable for punching and binding books, picture books, notebooks, and documents. It can be widely used in printing shops, offices, schools, homes, and other places.