Wilson Jones Heavy Duty Round Ring View Binder with Extra Durable Hinge, 3 Inch, Customizable, Black (W363-49BA) Customizable cover and spine simplify binder labeling and personalization 3 inch round ring binder holds 600 sheets Features our strongest binder covers and extra durable hinge for years of reliable use; Custom formulated, PVC Free polypro material lasts up to 10x longer than vinyl Never-gap rings close tightly to keep papers secure Two interior pockets provide additional storage