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Zasvec Plastic Binding Combs 14 mm Pack of 25 Binding Spines for Plastic Binding Plastic Spiral Binding Spine Plastic Binding Set for A4 Documents 21 Rings Black : Amazon.co.uk: Stationery & Office Supplies
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Binditek 100 Pack Plastic Comb Binding Spines, 1/2 Inch Diameter, 75 Sheet Capacity, Letter Size Black Binding Comb, for Students and Coworkers : Amazon.co.uk: Stationery & Office Supplies
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Rayson CR1916M100US Plastic Combs Binding Spines, 5/8in. 19-Ring, 120-Sheet Capacity, Colorful Comb Binding Spines, Max. Binding Letter Size Paper (8.3"×11.7"), Box of 100 : Amazon.co.uk: Stationery & Office Supplies
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