Features： 1、260 Sheet Capacity: This spiral binding coil is 29mm in diameter and holds up to 260 sheets (A4, 70g), making it easy to add and subtract paper. 2、 PVC Plastic: This spiral binding coil is made of PVC plastic, which is sturdy and wear resistant, not easy to be damaged and has a long service life. 3、360 Degree Rotation: This spiral binding coil features 360 degree page rotation for easier reading and binding items that lay flat. 4、30PCS: There are 30PCS of this spiral binding coil, which can be used for different needs, allowing you to easily bind paper and store it for a long time, very practical. 5、Wide Application: This spiral binding coil has a wide range of applications and is for engineers' files, business projects, office documents, and university presentations. Specification： Item Type: Spiral Binding Coil Material: PVC Plastic Binding Diameter: Approx. 29mm/1.14in Binding Capacity: 260 Sheets (A4, 70g) Teeth Number: 48 Teeth Ratio: 4:1 Package List： 30 x Spiral Binding Coils