Fellowes 8mm 5:1 pitch metal binding spirals in black (100 units) 5110101 provide a sober and functional organization for documents up to 50 A4 sheets. Boxes of 100 units with an 8mm diameter and 5:1 pitch in flexible black metal wire, allowing complete sheet rotation. The black color is perfect for maintaining visual consistency in office filing. Suitable for brief financial reports, contract drafts, and daily work.