To easily organize your card pages, card file binder features One-touch EasyOpen rings that open, close and lock with one simple motion. Delayed tension means closing rings will not clamp down and pinch fingers if they get in the way. 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 card pages. Pages may be added to increase capacity. Maximum capacity of binder is 800 cards.