Size and Quantity: Our A4 3 ring binder dividers are 22.8cm in width 28cm in length 1.5mm in thickness with a 7.5mm aperture 8 sheets/ set 2 sets 18 sheets in total. Sturdy Paper Divider: These A4 8 tab dividers are made of high quality paper strong and thick with 1.5mm in thickness very sturdy suitable divider paper with 8 tabs for 3-ring binders for long term use. 1 Blank Tab: Each A4 index binder dividers comes in 8 colors each sheet with 1 label for your marking the surface of the product is smooth and exquisite workmanship you can use it with confidence. 3 Holes: Our 3-hole ring index tab paper is suitable for 3 ring binders and the 3 holes design is simple and practical. It can make your notebooks neat and orderly beautiful and generous. Easy to Use: Simply open the ring binder of the A4 size and pass through the hole in the vertical tabs page which can be easily fitted into the ring binder. And the eye-catching color will covenient for your find.