Avery Heavy-Duty Binder with 3-Inch One Touch EZD Ring, Blue, 1 Binder (21016) 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 ring prevents gapping and misalignment of rings Wide front and back binder panels fully cover standard dividers and sheet protectors Organize and secure paper with four stacked pockets