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Amazon.com : MAKEASY Coil Spiral Binding Machine - Manual Hole Punch - Electric Coil Inserter - Adjustable Side Margin - for Letter Size/A4/A5, Comes with 100pcs 5/16'' Plastic Coil Binding Spines &
Amazon.com : TIANSE Binding Machine, Spiral Coil Binder Machine Manual Punch Binder with Electric Coil Inserter, Comes with 100pcs 5/16" Plastic Coil Binding Spines & Plier for Letter Size, A4, A5 or