Slanted D-ring Binders by Business Source BSN33117 | OnTimeSupplies.com
Amazon.com : 3 Ring Binder, 6 Inch Capacity D Ring Binders, 8.5" x 11" Presentation Folder View Binder with Pockets, Durable Non-Stick Customizable Clear View Cover for Documents, Files, Projects (Black) :
Amazon.com : 3 Ring Binder, Professional D Ring Binder 5 Inch, Presentation Folder for Pages 8.5 x 11 With Pockets, Clear View White Binder : Office Products
Bantex A4 3 D-Ring Insert Binder 25mm Push Lever White | Officeworks