Pina Zangaro Bex Black 3-Ring Binder, 8.5 x 11, &frac12;&rdquo; Capacity (36407) Capacity is (90) 8.5x11 sheets, 1/2" Outer dimensions are: 11.75 x 10.25 x 1 inches Bound in black bookbinders cloth with black lining Refill sheets not included Use 3-hole punch refills-Polypropylene Express refills-11 inch Hinge strips