Akiles AlphaBind-CE Electric Plastic Comb Binding Machine

Amazon Basics Comb Binding Machine, 350 Sheets Capacity, for paper sizes A5(15 holes)/Letter(19 holes)/A4(21 holes) with Adjustable Margin, Grey

MAKEASY Binding Machine, 21-Hole, 450 Sheets, Comb Binding Machines with 1 Box Comb Bindings Spines, Comb Binder for Letter Size, A4, A5 Paper

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Binding Spines,10Pcs Binding Spines Plastic Binding Comb Binding Coils Smooth Operation - Walmart.ca

Spiral Binding Machine, 21-Hole, 450 Sheets Capacity, Punch up to 12 Sheets, Comb Binding Machines for Letter Size A5/A4 Paper with 100pcs 1/4" Binding Spines