- DHP Metal Spiral designed for professional and durable document binding. - 5:1 pitch ensures a secure hold and makes page turning easy. - 20 mm diameter, allows binding up to 140 sheets of 80 grams per spiral. - White color, ideal for presentations, reports, and school or office work. - Pack of 25 units, optimal for frequent use in offices, copy shops, and educational centers. - Made with resistant materials that ensure a long lifespan and a quality finish. - Compatible with most 5:1 pitch binding machines. - Practical solution to keep your documents organized and protected.