The Opus binding with a metal reinforcement is ideal for organizing your documents. Designed for A4 documents, it can hold from 61 to 90 pages, keeping them securely and neatly arranged. The metal spine offers additional durability and long-term use, ensuring your projects remain in excellent condition.

• Compatible with A4 size documents.
• Capacity for binding 61-90 pages.
• Metal spine for increased strength.
• Set of 10 pieces for convenient use.