Standard size - 3 inch inside diameter,4 mm thick,holds up to 360 sheets of 20 lb. paper and can be used for a variety of applications.
Versatile - can be used as binder rings, book rings, index card rings,hanging curtains,clothes,and keys,tags.
Durable - the metal book rings are made of high quality steel with a nickel-plated surface to prevent rusting and are durable enough to withstand heavy-duty use.
Convenient - just pull to open and squeeze to close.
The package includes 24 large loose leaf rings,versatile and cost-effective.