To easily organize your card pages, card file binder features One-touch EasyOpen rings that open, close and lock with one simple motion. Easy-to-use design received an "Ease-of-Use" Commendation from the Arthritis Foundation. Complete outfit holds 500 cards with up to 20 per view and 1-1/2" expansion. Letter-size card file binder includes A-Z index tabs and 25 nonglare, archival-safe, business cards pages. Pages may be added to increase capacity. Maximum capacity of binder is 800 cards.