Avery Heavy-Duty View Binder with 4-Inch One Touch EZD Rings Sand (79335) One Touch EZD locking rings open with ease and keep pages secure EZD rings hold up to 50% more than same size round rings. Gap Free rings prevent gapping and misalignment Wide front and back binder panels fully cover standard dividers and sheet protectors Nonstick, archival-safe material won't lift ink or toner off printed pages Please Note: The actual binder size is measured by the rings not by the spine.