Wilson Jones Heavy Duty No-Gap Round Ring Binder, 1.5 Inch Capacity, Letter Size, Black (W364-34NBPP) 1 1/2 inch round ring binder holds 350 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