Ring mechanism 29mm

This ring binder mechanism is suitable for larger filing needs and fastens a stack of paper together. The ring binder mechanism is the same as the four-ring trio mechanism, which spreads the weight of the paper 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 punch 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