These sliding bars are made of plastic material, not easy to break and in use. They are excellent for binding and filing all types of documents invoices, planners, etc. Widely application, they are suitable for students, teachers, and other people who need them. Features -Color:Assorted Color -Material:Plastic -Size:31.00X1.20X1.00cm/12.18X0.47X0.39in -Plastic slide binders are not easy to break, and reliable, which can be applied for a long time. -The sliding design ensures that documents are securely held in place, making it easy to organize and categorize them. -Enough quantity of sliding bars, which are sufficient to meet your daily work, school, office use and replacement. -These colored sliding bars your book firmly, sturdy and not easy to fall off. -They can be simply expanded and closed easily, easily add or remove pages, convenient and flexible to use. Package list: Sliding Bars