Features • Long-Lasting Durability: Crafted with sturdy plastic, these binding spirals ensure your documents are securely compiled and can be stored for years without wear • Easy Manual Binding: Designed for simple use, these spirals can be easily bound by anyone with a standard hole punch, making them perfect for students and professionals alike • Smooth Page Turning: Featuring excellent gloss and strong adhesion, these spirals resist breakage and fading, allowing for effortless page turning and repeated use • Perfect Size for Any Project: With a 19mm inner diameter, these binding coils are ideal for A4 and A5 notebooks, making them versatile for various stationery needs • Generous 20-Piece Set: Each package includes 20 binding spirals, providing ample supply for multiple projects, making it a convenient choice for home or office use 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