Samsill Durable View Binder

6" Binder Capacity - Letter - 8 1/2" x 11" Sheet Size - 1225 Sheet Capacity - Fastener(s): D-Ring - Pocket(s): 2, Internal - Polypropylene, Chipboard - Black - 2.73 lb - Recycled - Clear Overlay, Locking Ring, Acid-free, Archival-safe, Heavy Duty - 1 Each. Locking D-ring holds up to 25% more sheets than round rings. Clear overlays on front, back and spine for easy customization.