Features • Long-Lasting Durability: Crafted from sturdy plastic, these binding spirals ensure your documents are securely compiled and stored for long periods without wear • Effortless Binding Process: Designed for easy manual binding with 30 pre-punched holes, perfect for offices, students, and anyone needing quick and simple document organization • Exceptional Gloss and Strength: Featuring a smooth finish and strong adhesion, these binding spirals resist wear and aging, ensuring your pages turn effortlessly without damage • Optimal 19mm Inner Diameter: Ideal for various projects, the 19mm size accommodates A4 and A5 notebooks, making it versatile for students and teachers alike • Generous 20-Pack Supply: Each package includes 20 binding spirals, providing ample replacements for multiple projects, ensuring you always have what you need on hand 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