TOPS Cardinal Easy Open Card File Binders feature finger-friendly EasyOpen locking rings which open, close and lock with just one touch! Delayed tension means closing rings will not clamp down and pinch fingers if they get in the way. These binders are so easy to use they received the "Ease-of-Use" Commendation from Arthritis Foundation, and are safer and easier to use than any other ring binder. The complete outfit holds 500 cards with up to 20 per view. Easy Open Card File Binders includes A-Z index and 25 non-glare archival safe poly card pages. Additional pages may be added (item # 7860 000) to increase capacity. The maximum capacity of this binder is 800 cards. You can count on TOPS high quality products for trusted, professional solutions for your workplace and workday!