Quantity:you will receive 2000 pcs page reinforcement rings in 10 different design. Size: the outside diameter is 13 mm / 0.51 inch, the inside diameter is 5 mm / 0.2 inch. Function: These Reinforcement Labels are designed to strengthen and repair punched holes.Apply the reinforcements to your standard-size punched holes to provide a durable border that resists tearing.Your punched holes will be stronger for the experience.Standard hole size labels will not rip or tear. Material:made of high-quality waterproof synthetic paper, which is waterproof, anti-alcohol anti-oil, not rotten, strong stickiness.It can be stored for a long time after being pasted, not easy to fall off. Uses:Repairing Holes Stickers are fit for library, school, home or office documents, loose-leaf folder, calendar, sheet music in a binder.For loose-leaf folders, loose-leaf papers, scores, calendars, offices, schools, libraries, home, etc.The labels stickers with various uses in your office, class, storage, educational projects and more.