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Fellowes Plastic Comb Bindings, 5/16" Diameter, 40 Sheet Capacity, Black, 100/Pack -FEL52507 - Walmart.com
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Amazon.com : CFS Products Plastic Comb Binding Spines, 1 Inch Diameter, Black, 200 Sheets, 100 Pack 13100 : Office Products
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Plastic Binding Combs, 5/16" Diameter, 19 Ring, 40 Sheet Capacity, Black, 100/Box - Bluebird Office Supplies
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