Amazon.com : 3 Ring Binder 1.5 inch Binder, 1 ½ Inch Round Ring Binders, Colored Binders for School Supplies, Printed Inside and Outside, Used for Papers, Business Cards Etc., Holds 280 Sheets,
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Amazon.com : Yoobi 1 Inch Binder Set – 3-Ring Binders with 2 Pockets – Perfect for School or Office – Holds up to 220 Sheets – 4 Pack – Solid Multicolor Variety : Office Products
Amazon.com : Samsill Economy 1 Inch Mini 3 Ring Binder, Made in The USA, 9.1” x 7.5” Round Ring Binder, Non-Stick Customizable Cover, Assorted Fashion, 6 Pack : Office Products
Amazon.com : Premium Economy 3 Ring Binder, 2 Inch Pull-Open Round Rings, Holds 400 Sheets, Flexible, Lightweight, 4-Pack, Side Opening, Multi-Color—White, Blue, Yellow, Orange : Office Products