Amazon.com : 2 Ring Binder Mechanism, Magnetic Ring Binder 1 Inch, D Shaped Ring, for Hanging A5 Paper (Size 5.5 x 8.5 Inch, Half Letter), Pack of 10 : Office Products
Avery® Economy Binder - 1 1/2" Binder Capacity - Letter - 8 1/2" x 11" Sheet Size - 275 Sheet Capacity - 3 x Round Ring Fastener(s) - 2 Internal Pocket(s) -
2-Inch Heavy Duty 2-Ring Binder – Top Opening | Carstens
Amazon.com : Lever Arch 2-Ring Binder; U.S. Letter Size; for 2 3/4" (7 cm) Center-to-Center (cc) Paper Punches (Not for A4 Documents with 8 cm cc Spacing) (1 Assembled Binder, Gray) : Office Products
Advantage Mini 2-Ring Binder for Half Letter Size Paper, 3" Spine - Bindertek