DIYEAH 5pcs Ring Binder Mechanism Kit for Loose Leaf Book DIY Office and School Use for Organizing Projects and Presentations Compatible with Various Planners

["Round ring binders:they can be simply expanded and closed easily, easily add or remove pages, convenient and flexible to use,notebook segmented binder","Photo album binder:this ring binder mechanism is applicable for size loose leaf notebook and planner, suitable for most people, such as students, teachers, etc,, a wide range of ,photo album binder ring","Binder mechanism replacement:it can help you collect loose leaf together, widely applied in your daily life and work,binding combs","Stationery supplies:they are very lightweight and portable, and you can use them at home, school or office, and more,3-ring journal binder","3-ring binder inserts:you will get the binder rings mechanisms for sizes loose leaf book, enough quantity for using in different places at one time,metal book binder ring"]