Features 22mm 30 Holes: Accommodates multiple sheets with 30 hole loose leaf paper binding strip and an inner diameter of 22mm, ensuring efficient document organization. 10 Pieces in Set: Convenient set of 10 durable plastic binding spines offers long-term paper storage and usage flexibility. Durable PP Material: Crafted from high-quality PP plastic, the binding spines are wear and rust resistant, providing longevity and reliability. Good Performance: The glossy and strong adhesion of the binding strip ensure smooth page turning and reusability, perfect for frequent use. Wide Usage: Versatile paper binding tool suitable for manual binding by punching holes, making it user-friendly for both office staff and students. 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