3-Inch Heavy Duty 3-Ring Binder – Side Opening | Carstens
1'' Inch Heavy Duty 3 Round Rings Binder with folding stand Red | eBay
Amazon.com : Staples Better 3-Inch D 3-Ring View Binder (White, Sold as 1 Each) – Holds up to 600 Sheets, Heavy Duty Binder with Wide Design, 2 Interior Pockets, Perfect 3-Ring Binder