Features 22mm Inner Diameter: Designed with a spacious 22mm inner diameter, this loose leaf binding spine accommodates multiple sheets effortlessly for efficient organization 10-Piece Set: Each set includes 10 binding spines, providing ample supply for all your paper binding needs, ensuring you’re well-equipped for any project PP Construction: Made from high-quality PP plastic, these binding spines are wear-resistant and -proof, ensuring long-lasting performance and reliability Features: 1、22mm 30 Holes: This is 30 hole loose leaf paper binding strip with an inner diameter of 22mm, which can hold multiple sheets at one time. 2、10 Pieces in Set: The set contains 10 pieces this binding spines, allowing you to easily store paper and use for a long time. 3、 PP Material: The binding spine is made of excellent PP plastic, there is no harmless, has good wear and resistant, anti aging, sturdy and . 4、Good Performance: The binding strip is glossy, and has strong adhesion, not easy to break, can turn page smoothly, and can be used repeatedly. 5、Wide Usage: Binding strip can be manually bound by punching suitable holes, which can be easily operated by any office staff or student. Specification: Item Type: Loose Leaf Binding Spine Material: Polypropylene Inner Diameter: Approx. 22mm/0.9in Type: Stationery Accessories Binding Consumables Package List: 10 x Loose Leaf Binding Spine Package List 10 x Loose Leaf Binding Spine