Features Smooth Page Turning: The 16mm inner diameter of the spiral binding coil ensures easy and seamless page turning, enhancing your reading and writing experience. Customizable Binding: Easily open and close the binding comb, and cut it to your preferred length, providing personalized paper storage solutions. Large Sheet Capacity: Capable of holding up to 130 sheets, this binding spine is perfect for offices, classrooms, and libraries, offering efficient document organization. Durable Material: Crafted from premium plastic, the binding coil is highly durable, corrosion-resistant, and features an attractive color, ensuring long-lasting use. Value Pack: With a total of 10 spiral binding coils in the set, enjoy the convenience of having ample replacements for damaged coils, simplifying your binding needs. Specification: Item Type: Spiral Binding Coil Inner Diameter: Approx. 16mm / 0.63in Hole Number: 30 Holes Capacity Reference: 130 Sheets Package List: 10 x Spiral Binding Coil Package List 10 x Spiral Binding Coil