Avery® DuraHinge Ring Binder

1 1/2" Binder Capacity - Letter - 8 1/2" x 11" Sheet Size - 375 Sheet Capacity - Fastener(s): Slant Ring - Pocket(s): 4 - Polypropylene - Recycled - Pocket, Durable Hinge, Tear Resistant, Split Resistant, Non-stick, Archival-safe, Ink-transfer Resistant, Long Lasting, Heavy Duty - 6 / Carton. DuraHinge design that's stronger, lasts longer and resists tearing. DuraEdge makes the sides and top more pliable to resist splitting.