Fellowes 20mm 5:1 pitch metal binding spirals in black (100 units) 5110801 offer a highly reliable and understated solution for large volumes of paper. The box contains 100 20mm black metal spirals with a 5:1 pitch, designed to bind up to 170 A4 sheets with easy handling. The black coating prevents scratches and ensures comfortable handling. It is widely used in copy shops, training centers, and administrative services.