cardinal economy 3 ring binder, 1 inch cardinal economy 3 ring binder, 2 inch cardinal economy 3 ring binder 1.5 inch cardinal economy 3 ring binder 3 inch cardinal economy 3-ring binders, 1", round rings, holds 225 cardinal economy 3 ring binder, 1/2 inch cardinal economy 3 ring binder cardinal economy 3-ring binders, 1.5", round rings, holds 350 cardinal economy 3 ring binder 4 cardinal economy 3-ring binders, 2", round rings, holds 475 sheets