EasyOpen� locking Slant-D� ring mechanism instantly engages when closed, eliminating two-step and two-hand operation. No scratched desks or bookshelves from triggers that don't close up. Opens and closes with just the touch of one finger which earned this binder the "Ease-Of-Use" Commendation from the Arthritis Foundation. Safer and easier to use than other metal ring binders�no more pinched fingers. Holds 25% more than conventional round ring binders. Clear overlay on front cover, back cover and spine allows insertion of custom title sheets for a professional looking presentation. Maximum Capacity Range ("): 2 in; Sheet Capacity: 500; Color(s): Black; Binder Sheet Size: 11 x 8 1/2.