Avery Heavy-Duty View 3 Ring Binder - 1 1/2" Binder Capacity - Letter - 8 1/2" x 11" Sheet Size - 400 Sheet Capacity - 400 x 1.50" Ring - Fastener: Ring - Pocket: 4, Internal - Polypropylene - White - Adhesive, Clear Overlay, Heavy Duty, Locking Ring