Features Durable ABS Material: Constructed from durable ABS material, these spiral binding coils provide long-lasting strength and reliability, ensuring your documents stay securely bound. Colorful and Glossy Finish: With a glossy exterior and vibrant color options, these binding spines offer strong adhesion, wear resistance, and protection against rust, corrosion, and aging, providing a professional finish to your documents. Convenient Portability: These spiral binding coils are easy to carry, making them ideal for on-the-go use. Their compact size ensures they won't take up much space when stored. Versatile Binding Method: Whether bound manually or with instruments, these coils are beginner-friendly and offer a straightforward binding process for various document types. Wide Applicability: Suitable for offices, students, and individuals, these spiral binding coils are perfect for a wide range of binding needs, offering practicality and ease of use for all users. Specification: Item Type: Spiral Binding Coils Material: ABS Inner Diameter: Approx. 11mm / 0.43in Application: Stationery accessories binding supplies Package List: 20 x Spiral Binding Coils Package List 20 x Spiral Binding Coils