Features 34 Hole Design: This binding spine accommodates 34 holes with a 12mm inner diameter, allowing you to securely bind up to 85 sheets of paper for optimal organization Plastic Material: Crafted from high-quality plastic, these split binding rings are lightweight, reusable, and designed to withstand wear and aging, ensuring long-lasting use Exceptional Durability: Featuring a glossy and strong adhesion, these binding rings resist breaking and fading, making them for long-term paper storage Features: 1、For Your Paper: Designed to have 16mm inner diameter, the spiral binding coil enables smoother page turning for reading and writing. 2、Better Binding: Easy to open and close, you can also cut the binding comb into your preferred length for your needs of paper storage. 3、Large Capacity: Able to clip a large amount of sheets up to 130pcs, the binding spine suits for office, classroom, library and so on. 4、Great Material: Made of premium plastic material with pretty colour, not easy to deform and very with and long use. 5、10Pcs in Total: There are 10pcs spiral binding coil in the set, and the large quantity will simplify the replacement of damaged ones. 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