Slant-D ring view binder features clear nonstick ClearVue overlays on the front, back & spine for three-sided customization. XtraLife cover hinge offers added strength. Everyday durability is ideal for active projects. Nonlocking, Slant-D rings hold 25 percent more than conventional, metal round rings. Back-mounted steel rings provide a clean professional spine & reduce wear. 1-1/2" expansion holds approximately 375 letter-size sheets. Binder also offers a wrinkle-resistant vinyl cover, sturdy chipboard core, exposed rivets & horizontal pockets inside the front & back covers to hold loose documents. Each pocket holds 40 sheets.