[Versatile Puncher] This 6-hole paper punch is compatible with A4 (30 holes), B5 (26 holes), and A5 (20 holes) paper sizes, providing flexible hole-punching options. [Hole Punch Specification] Features a 5.5mm hole diameter, 7mm paper feed depth, and 9.5mm hole spacing. Punctures up to 5 sheets of paper at once (maximum 80gsm). [Easy Positioning] Equipped with positioning guide rulers on both sides for accurate alignment, ensuring consistent and precise hole placement. [Sharp Metal Blade] Constructed with a sharp metal blade that delivers clean, accurate holes for neat and organized document filing. [Customizable Punching] Allows users to adjust the number of holes punched to meet specific needs, ideal for notebooks, scrapbooks, and other organizational projects.