Avery® Heavy Duty Binder3" , One Touch(tm) Locking D Rings, Black - 3" (76.20 mm) Binder Capacity - Letter - 8 1/2" (215.90 mm) x 11" (279.40 mm) Sheet Size - 670 Sheet Capacity - 3 x 3" (76.20 mm) Ring(s) - Fastener(s): Ring - Pocket(s): 4, Internal - Polypropylene - Black - Recycled - Label