11mm/13mm/19mm Diameter OptionalBinding A4 Size Paper(11mm-Black), 20Pcs Plastic Comb Bindings Comb Binding Spines Office Supplies

Features: 11mm can bind 75 sheets of paper, 13mm can bind 85 sheets of paper, 19mm can bind 150 sheets of paper. Suitable for: 30 holes A4 paper, 26 holes B5 paper, 20 holes A5 paper. You can cut it according to your needs. Features: 11mm can bind 75 sheets of paper, 13mm can bind 85 sheets of paper, 19mm can bind 150 sheets of paper. Material: This is a plastic loose leaf paper binding ring, which is made of good quality plastic material. Easy to Use: The plastic ring has good toughness and can be used repeatedly, manual binding is convenient.