Durable plastic allows for frequent reference. Multicolored dividers have stylishly shaped tabs. Customize tabs using a ballpoint pen or pencil. To reuse, just erase and write again. Use the Corner Lock with expandable pocket or slash pockets for storage. Slash Pocket-Three-hole punched; slash pocket for extra storage on each divider holds up to 25 sheets. Index Divider Style: Customizable; Index Divider Size: 11.13 x 9.25; Punched/Unpunched: 3-Hole Punched; For Use With: Ring Binders.