Amazon.com: 10 Packs 2-Hole Ring Binder Mechanism Replacement Kit, 2 O Rings Metal Clip Ring Binder Mechanism Loose Leaf Binding Rings for Organizers Binder Planners (for A5 B5 A4 Size, Silver Color,
11" 2-Ring Top Binder Black Poly - Item: #14-110
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, Black) : Office Products
2 Ring Binder Padfolio File Folder, Business Organizer Portfolio with – epadfolios
2 Inch Binder - 4 Pack, Multicolor – Yoobi
Ability One - Ring Binders; Binder Type: 3 Hole Binder; Color: White - 14760169 - MSC Industrial Supply
2 Ring Mechanism Ring Binder Clip Antique Brass Metal 2 Hole Ring Binder Mechanism Clip - China Ring Binder Clip, Office Stationery | Made-in-China.com