Features • Long-Lasting Durability: Crafted from sturdy plastic, these binding spirals ensure your documents stay securely compiled for extended periods without wear or tear • Easy Manual Binding: Designed for convenient use, these spirals can be easily installed by punching suitable holes, making them perfect for offices, students, and personal projects • Smooth Page Turning: With excellent gloss and strong adhesion, these binding spirals resist breakage and fading, allowing for effortless page turning and repeated use • Optimal 19mm Size: Featuring an inner diameter of 19mm, these binding coils are ideal for A4 and A5 notebooks, providing a perfect fit for students and teachers alike • Generous 20-Piece Set: Each package includes 20 binding spirals, offering ample supplies for multiple projects, ensuring you always have enough on hand for various needs Features: 1、 WITH LONG LIFE: and sturdy plastic binding spirals allow you to easily compile paper and store for long periods of time 2、CONVENIENT BINDING METHOD: Can be manually bound by punching suitable holes, which can be easily operated by any office, student party, and individual 3、GOOD GLOSS WITHOUT BREAKAGE: Poss good gloss, strong adhesion, wear resistance, resistance, aging resistance, not easy to break and fade, smooth page turning, can be used repeatedly 4、19MM INNER DIAMETER: Stationery accories binding consumables, inner diameter for 19mm, suitable for students and teachers 5、20PCS IN TOTAL: The package contain a total of 20pcs binding spirals, enough for you to replace and use, very convenient Specification: Item Type: Plastic Spiral Binding Coils Inner Diameter: Approx. 19mm / 0.75in Type: Stationery accories binding consumables Package List: 20 x Plastic Spiral Binding Coils Package List 20 x Plastic Spiral Binding Coils