Fileback dividers are extended 1" in length, scored for folding and come with a pre-affixed 1" bonded fastener. Fold on score line to form a flap and slip divider over existing fastener in folder. The next divider is attached to the fastener on the first divider , and so on. Add as many sections as you need. Chart material is fastened to each individual divider giving you immediate access to easily add or remove sheets.