Ring mechanism 29mm

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. - With trio-mechanism - Holds many papers - Works with perforated pages - Material: Metal - Diameter: 29 mm - Number of rings: 4