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10pcs 8-16mm Spiral Binding Coil A4 46 Hole Plastic Single Coils Loose-leaf Notebook Binding Ring Binder School Office Supplies - Binding Combs & Spines - AliExpress
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Spirali per rilegatura, Spirali plastiche Coil A4 passo 4:1 nero 100 pezzi (8 mm) : Amazon.it: Informatica
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