Avery 2" Durable View 3 Ring Binder, Slant Ring, Holds 8.5" x 11" Paper, 1 Black Binder (17031) Designed to be stronger and more durable than basic binders, this black binder features a tear-resistant spine (DuraHinge) and more flexible, split-resistant edges (DuraEdge) Slant ring holds 20-30% more paper than basic 2 inch binder; 500-sheet capacity Pages lie flat because rings are mounted on the rear binder panel instead of on the spine Extra storage with 2 interior clear pockets; all Durable binders are made with nonstick PVC-free materialno ink transfer Durable view binder allows for customization on spine, front and back covers