Office Depot® Red Heavy-Duty 2" D-Ring View Binder Is Designed To Fully Cover Standard Dividers And Sheet Protectors. 2" Rings Hold Up To 500 Sheets Of 3-Hole Punched Paper. Covers Of D-Ring Binders Are Made Of Non-Stick Polypropylene For Reliable Use. Corrugated Cardboard Adds Strength And Durability.