This Concord 1-20 Classic Index Divider is ideal for use in lever arch files and ring binders. Sized to A3 and hole punched, they offer you an easy way to archive and index your files and documents. With a pre-printed numerical indexing system and tabs numbered 1-20, it is easy to organise files for fast retrieval. Transparent Mylar reinforced tabs and punched holes help ensure long-lasting, tear-resistant durability.