Fellowes 6mm silver-pitch 5:1 metal binding spirals (100 units) 5115101 add a modern, metallic touch to thin presentations. Comprising 100 silver-plated metal spirals with a 6mm diameter and 5:1 pitch, this box allows you to bind up to 30 A4 sheets with great precision. The silver finish highlights the quality of the printed cover. An excellent option for short portfolios, menus, and small work guides.