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Amazon.com : TIANSE Coil Binding Machine, Electric Coil Inserter, Manual Round Hole Punch, 15 Sheets Punch Capacity, Perfect for Letter Size / A4 / A5, Comes with 100pcs 5/16'' Plastic Coil Binding
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Amazon.com : Binditek 50 Pack Plastic Spiral Binding Coils, 20mm(3/4"),170 Sheet Capacity,4:1 Pitch, Black Binding Spirals : Office Products
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Plastic Spiral Coil Binding Supplies 12" Black 6mm (1/4") 30 Sheets – Printer's Parts & Equipment -USA
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Juvale 100-pack Black Spiral Binding Coils Combs, 10.75" Plastic Spines For 60 Sheets, 10mm, 19 Loops : Target
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4:1 Plastic Coil Binding | Binding Supplies | Finitura Binding & Finishing, Waukesha, Wisconsin 53188
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