Amazon.com : Shuokecrafts 2pcs Letter Size 3 Ring Binder Mechanism,3 D-Rings, 2.5 Inch Capacity, 11 inch Sheet Size, 36mm Base, No Boosters : Office Products
CLASSIC GRANDE 3-ring Binder, incl.Slipcase at lighthouse.us
VARIO G Padded binder including slipcase, extra-large capacity, 3 D-ring mechanism at lighthouse.us
Office Depot Brand Heavy Duty View 3 Ring Binder 3 D Rings 49percent Recycled Black - Office Depot