Packaging Dimensions --You will receive 20pcs binder index divider sheets approx 21.3x15cm/8.4x5.9 inch and 0.5mm thickness in overall dimension 4.5mm/0.2 inch in round hole 5x12mm/0.2x0.5 inch in rectangle hole. Sufficient quantity to meet your various usage needs Premium Material --Made of premium plastic which is fine workmanship sturdy and durable not easy to break and tear can be used for a long time Unique Design --The 4 round rings and 2 rectangular rings with translucent frosted design not only enhance compatibility of use but also provide a clear view for quick identification Purpose of use --Use these binder dividers to effectively organize your planner diary agenda and more by category Wide Application --Binder dividers for home office and work can be labeled with a number or any word to quickly locate notes and files