1.High quality: The transparent hole label is made of high-quality paper, which can extend the service life of perforated paper. 2. The size of the folder reinforcement sticker is 0.5 inches in diameter, with an inner hole diameter of 0.25 inches, which is compatible with most loose leaf paper. A set of 2500pcs is sufficient to meet your replacement needs. 3. Transparent circular labels are tear resistant and sturdy, reinforce and repair perforations on loose leaf paper to ensure proper functioning and protect your files. 4. Multiple uses: The binder paper reinforcement is suitable for music scores in libraries, schools, home or office documents, binders, calendars, and binders. Label stickers have various uses in offices, classrooms, warehouses, educational projects, and more.