Welcome to our store. Single hole size: The diameter of the round hole is about 8mm/6/15 inches. Thoughtful design: Adjustable scale design can fix the position of the hole. You don't need to measure, but you can punch the holes accurately. The beveled blade makes it quick to penetrate paper or card, and the holes cut smoothly. The built-in heavy-duty and highly flexible spring saves you the effort of punching holes. Drilling depth: Our heavy-duty hole punch can punch up to 20 sheets of paper at a time. It can be used for cardboard, thick card, PVC board, plastic board, etc., but not for metal board. Ergonomic design: Our handheld hole punch is easy to hold and use. It helps you punch holes easily and quickly, even on thick cardboard. MULTI-PURPOSE: Our handheld punch is suitable for paper, kraft paper, cardboard, business cards, photos, aluminum foil, scrapbooking, tickets, product labels, PVC sheets, etc. Widely used in offices, schools, homes, stores, retail stores, studios, etc. It is also a good gift for family or friends.