These binder mechanism are made of ABS 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:Blue -Material:ABS -Size:31.00X1.00X1.00cm/12.18X0.39X0.39in -The loose leaf binder mechanisms are made of sturdy ABS, which are , not easy to break. -It is designed to hold various sizes of papers and files, making it a convenient option for organizing documents. -They are easy for you to use when you need to add or remove pages and hold pages securely. -Designed for everyday use, nice for organizing projects, presentations, loose leaf book DIY, and more. -Suitable for many occasions to use, such as office, school and home, giving you a wonderful experience and bring you a good mood. Package list: Binder Bars