Features Smooth Page Turning: The 16mm inner diameter of the spiral binding coil ensures seamless page turning, enhancing your reading and writing experience. Customizable Binding: Easily open and close the binding comb, and trim it to your desired length for efficient paper storage. High Capacity: Capable of clipping up to 130 sheets, this binding spine is ideal for office, classroom, and library use, offering ample storage for your documents. Premium Material: Crafted from durable plastic with a vibrant color, the binding coils are resistant to deformation, corrosion, and ensure long-lasting use. Value Set: With 10 spiral binding coils included, this set simplifies the replacement of damaged coils, providing convenience and cost savings. 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