Avery® Heavy-duty vinyl ezd ring reference binder Heavy-Duty Vinyl EZD® Ring Reference Binder, 1" Capacity, Gray Revolutionary One Touch™ mechanism lets you open, close and lock your binder in one easy step. Gap Free™ feature prevents ring misalignment so pages turn smoothly. Locking EZD® ring has up to 50% more capacity than the same size round ring. Back-mounted rings allow pages to lie flat. Four inside pockets store unbound materials for improved organization. Wide front and back panels fully cover standard dividers and sheet protectors. Exposed rivets on spine.