High-quality materials: The corner clip is made of plastic, with strong clamping force, beautiful and practical, smooth surface without edges and corners to prevent paper wear, stains or scratches, and the sturdy and durable triangular paper clip can be used repeatedly. Exquisite design: Isosceles triangle design, which fits perfectly into the corner of the paper. Information can be easily locked without coming loose, and files can be easily sorted without clutter. The corner clip also prevents the corners of the paper from curling and bending, keeping the book's corners neat. Paper corner protector: The triangular paper clip is attached to documents, notes and invoices at a 90-degree angle for sorting and managing labels, making quick identification easier next time, making them look neater, cleaner and more. The paper corner protector can also help you bind loose pages, documents, invoices, etc. Easy to store: Our clips are reusable and can be easily removed with a simple flick of the wrist for full access to your files at any time. The folders can also be used as bookmarks, helping you to mark them so that they can be easily found next time. Multifunctional clip: The triangular clip has a vertical height of 3.9 cm and a width of 5.2 cm. It is sturdier than ordinary clips. For approx. 40x50 sheets of paper. It is suitable for all types of book organization, and can also be used as DIY folders, bookmarks, photo album holders, business card holders and envelope holders. Gift: This package contains 10 corner clips in classic color styles, enough to meet your daily needs, and you can give them as a gift to your students or book lovers.