Fellowes 10mm pitch 5:1 metal binding spirals in silver (100 units) 5115301 provide a modern, metallic finish to your documents. With a 10mm diameter and 5:1 pitch, this box of 100 spirals allows you to bind up to 75 A4 sheets with great fluidity of movement. The silver tone gives an industrial and technological aesthetic, guaranteeing maximum resistance to wear. Ideal for corporate presentations, technical reports and catalogs.