Product Name: Hole Reinforcement Sticker Features: - Made of high-quality thick paper material, strong and durable, does not fall off or break easily - You will receive 1000 reinforced sheet stickers, compatible with most loose-leaf papers, enough quantity for your daily use - Perforated reinforcement stickers can repair holes in loose-leaf paper and prevent holes from tearing or weakening - Easy to use, simply align the circular sticker around the round hole to be reinforced - Permanently adhered, sticks well to paper, cards, laminated documents, and almost any flat surface - Can repair loose-leaf holes, greatly extending the lifespan of your laptop - Hole-reinforced loose-leaf labels are perfect for library, school, home, or office documents, perfect for calendars, agenda stickers, baby books, cookbooks, file folders, behavior charts, and more Material: paper Outer diameter: 15mm Inner diameter: 6mm Color: white*2 boxes+transparent*2 boxes Notice: Manual measurement, please allow slight size error Colors may vary slightly due to differences in screen settings Packing list: 1000*Transparent self-adhesive hole reinforcement ring