Features： 1、10mm 30 Holes: This is 30 hole loose leaf paper binding spine with an inner diameter of 10mm, which can hold about 65 sheets. 2、Set of 10Pcs: The kit includes 10 pieces this binding spines, allowing you to easily compile paper and store for long time. 3、 PP Plastic: Made of PP plastic, non harmless, wear resistant, rust proof, anti aging, sturdy and durable. 4、Good Performance: The surface of the binding strip is glossy, which has strong adhesion, not easy to break, can turn page smoothly, and can be used repeatedly. 5、Simple Binding: Binding strip can be manually bound by punching suitable holes, which can be easily operated by any office staff, student. Specification： Item Type: Loose Leaf Binding Spine Material: PP Inner Diameter: Approx.10mm/0.4in Hole Number: 30 Holes Type: Stationery Accessories Binding Consumables Reference Number Of Pages That Can Be Bound: 10mm 65 Sheets Package List： 10 x Loose Leaf Binding Spine