1、[Versatile Puncher] This 6 hole paper punch is suitable for A4 (30 holes), B5 (26 holes), and A5 (20 holes) paper sizes, offering versatility in hole punching options. 2、[Hole Punch Specification] 5.5mm hole diameter, 7mm paper feed depth, 9.5mm hole spacing. Our hole puncher can punch up to 5 sheets of paper at once (maximum 80gsm). 3、[Easy Positioning] Equipped with positioning pillar rulers on both sides, this puncher allows for easy and accurate placement, ensuring accurate hole punching each time. 4、[Sharply Metal Blade] Featuring sharply metal blade, this hole puncher creates clean and accurate holes, facilitating neat and organized paper organization. 5、[Customizable Punching] Once you have mastered the operation, you can easily customize the number of holes punched to suit your specific needs for notebooks, scrapbooks, and more.