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, Blue) : Office Products
3 Ring Binder. 3" Binder Capacity. 8 1/2" x 11" Sheet Size. Blue. 35255286619 | eBay
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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
Business Source EasyOpen Locking Slant-D Ring Binders - 2" Binder Capacity - Letter - 8 1/2" x 11" Sheet Size - 500 Sheet Capacity - Slant D-Ring Fastener(s) - Inside Front &
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