4" Binder D-Ring Black Acco

Get premium features a higher sheet capacity extra pockets and the best durability with Ultra Duty binders. Ultra Duty combines our best ring with the strongest covers made by Wilson Jones for unmatched ease of use and strength. D-Lock rings with a Single-touch trigger keep papers secure yet are so easy to open that you can use just one finger. Ultra Duty covers are made from custom-formulated PVC-free polypropylene which lasts up to 10x longer than a vinyl and is more eco-friendly.