Durable, heavyduty, 1 ring card file binder keeps 200 business cards organized and within easy reach View up to 20 cards at one time AZ index and 10 nonglare vinyl card pages are included Binder can be expanded to its 600card capacity by adding 20 pages sold separately Binder offers sewn vinyl construction, two inside pockets, a pen loop for convenience, brass corners and 1 round rings