Features Smooth Page Turning: The 1m inner diameter of the spiral binding coil facilitates effortless page turning, enhancing your reading and writing experience. Customizable Binding: Easily install, remove, and cut the binding comb to your desired length for efficient storage and organization of documents. High Sheet Capacity: Capable of holding a large number of sheets, this binding spine is ideal for use in offices, classrooms, and libraries, providing convenient document management. Premium Material: Crafted from durable and corrosion-resistant plastic, the binding coil ensures long-lasting use and maintains its shape, offering reliability and longevity. Generous Quantity: With 20pcs included in the set, you'll have an ample supply of spiral binding coils for easy replacement and maintenance, simplifying your document binding needs. Specification: Item Type: Spiral Binding Coil Inner Diameter: Approx. 1m / 0.51in Type: Stationery accessories binding consumables. Package List: 20 x Spiral Binding Coil Package List 20 x Spiral Binding Coil