Avery Heavy-Duty View Binder, 3" One-Touch Rings, 670-Sheet Capacity, DuraHinge Black (79693) DuraHinge design is stronger, lasts longer and resists tearing, and 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 One Touch rings open and close with ease and keep pages secure Gap Free(TM) rings prevent gapping and misalignment Wide front and back binder panels fully cover standard dividers and sheet protectors