Mini Durable 3 Ring Binders, 1”, Round Rings, 5-1/2” x 8-1/2”, 175-Sheet Capacity, Black, 2 Pack (13456) | Avery.com
Amazon.com : 1-inch 3 Ring Binder with 2 Interior Pockets, 1'' Basic Binders Holds US Letter Size 8.5'' x 11'' Paper - Durable, Versatile Binders for Office, Home, and School Use, 6
JAM Paper 3 Ring Blue 1-in Binder in the Binders department at Lowes.com
Smead Viewables 3 Ring Binder Index Dividers Letter 8.50 Width x 11 Length White Divider 25 Box - Office Depot