Features 34 Hole Design: The 34 hole plastic binding spine with a 12mm inner diameter can securely bind about 85 sheets of paper, providing a reliable and durable binding solution for your documents. Excellent Plastic Material: Made of high-quality plastic, these binding rings offer good toughness, wear and aging resistance, ensuring reusable and lightweight functionality for long-lasting use. Good Gloss: These binding rings feature a glossy finish, strong adhesion, and resistance to breakage or fading, offering a professional and polished look while securely binding and storing your documents. Convenient Installation: Easily punch the appropriate holes in your paper for manual binding, making it suitable for office, school, or home use, providing a practical and convenient binding solution. 10pcs in 1 Set: Each set includes 10 detachable split binding loops, offering sufficient quantity for easy use and replacement, allowing for easy opening and closing at any time. Specification: Item Type: Binding Spine Inner Diameter: Approx. 12mm / 0.47in Number of Holes: 34 Holes Binding Pages: 12mm 85 sheets (for reference) Package List: 10 x Binding Spines Package List 10 x Binding Spines