Avery® Heavy-duty Binder - One-Touch Rings - DuraHinge

1 1/2" Binder Capacity - Letter - 8 1/2" x 11" Sheet Size - 400 Sheet Capacity - Fastener(s): Ring - Pocket(s): 4, Internal - Polypropylene - Black - Recycled - Pocket, Heavy Duty, One Touch Ring, Long Lasting, Tear Resistant, Split Resistant, Locking Ring - 1 Each. DuraHinge design that's stronger, lasts longer and resists tearing. DuraEdge makes the sides and top more pliable to resist splitting.