Avery 27554 Mini 3 Ring Durable Binder, Black, 5-1/2 x 8-1/2", Round Ring, 2" Capacity. Use this Mini Durable Binder to organize paperwork like a pro. The metal round rings holds up to 375 sheets of paper and are perfect for address book inserts and contact sheets. Pages lie flat with back-mounted rings. You can also organize and secure loose and unpunched pages with two pockets on the front and back inside covers. Each pocket holds up to 20 sheets. An ID label holder on the spine makes content easy to identify at a glance. Binder also features vinyl construction, a sturdy chipboard core and exposed rivets.