Avery Heavy Duty Binder 3" , One Touch™ Locking D Rings, Black, 3" Binder Capacity, Letter, 8 1/2" x 11" Sheet Size, 670 Sheet Capacity, 3 x 3" Ring, Fastener: Ring, Pocket: 4, Internal, Polypropylene

This Heavy-Duty Binder is perfect for extended use and features a label holder for easy reference when on a shelf. DuraHinge design is stronger, lasts longer and resists tearing. The DuraEdge feature makes the sides and top more pliable to resist splitting. Deep-texture film offers a smoother finish and features a linen pattern for high-quality look and feel. Four clear interior pockets offer extra storage for loose and unpunched papers. Wider front and back binder panels fully cover standard dividers and sheet protectors. The strong, 3" One Touch rings hold up to 670 sheets of paper and can be opened and closed easily when you need to add or remove pages.