Cardinal EconomyValue Round-ring Binders - 3" Binder Capacity - Letter - 8 1/2" x 11" Sheet Size - 625 Sheet Capacity - 3 x Round Ring Fastener(s) - 2 Inside Front & Back Pocket(s) - Vinyl - Black - 1 by Cardinal
Durable reference binder features XtraLife Hinge to prevent tearing along seams. Steel round rings are equipped with dual opening and closing triggers for easy sheet removal and insertion. Spine-mounted, nonlocking rings offer a 3" capacity to hold approximately 625 sheets. Horizontal pockets inside the front and back covers are perfect for storing loose documents. Each pocket holds 40 sheets. Cover is made of a deep suede poly to protect contents from spills. Letter-size binder also features exposed rivets and a sturdy chipboard core.