Suitable for larger filing needs, this ring binder mechanism fastens a stack of papers together. The ring binder mechanism is the same as the four-ring trio mechanism, allowing the weight of the paper to be spread across the folder while keeping the pages more protected.

This four-ring binder is a good choice when it comes to securing a large amount of paper. You will need to make holes in the sheets of paper before attaching them to this binder.

• Mechanism: Trio-mechanism
• Capacity: Holds many papers
• Compatibility: Works with perforated pages
• Material: Metal
• Diameter: 29 mm
• Number of rings: 4