- DHP metal spiral designed to securely and professionally bind documents. - 5:1 pitch, compatible with standard binding equipment. - Each spiral allows binding up to 90 sheets of 80 grams. - Black color, provides an elegant and professional finish to your presentations. - Box of 25 units, ideal for offices, educational centers, and copy shops. - 12 mm size, perfect for reports, manuals, and medium-sized projects. - Made of durable metal, ensures durability and strength for daily use. - Efficient solution to organize and protect important documents.