Business Source Basic Round Ring Binder With Label Holder, 1 1/2" Ring, 8 1/2" x 11", Black - Basic round-ring binder with label holder features two triggers on the ring mechanism that provide easy access to your documents. Back-mounted metal rings allow pages to lie flat. 1-1/2" capacity holds up to 350 letter-size sheets. Clear pockets on the inside covers offer extra document storage with a 30-sheet capacity for each pocket. Design also features a label holder, polypropylene construction, sturdy chipboard core and exposed rivets.