![loose leaf spiral](https://images-na.ssl-images-amazon.com/images/G/01/x-locale/common/grey-pixel.gif)
20 pieces plastic comb bindings comb binding spine, 11 mm/13 mm/19 mm diameter optional, A4 binding spine
Suitable for: 30-hole A4 paper, 26-hole B5 paper, 20-hole A5 paper. You can cut it according to your wishes.
Features: 11 mm can tie 75 sheets of paper, 13 mm can tie 85 sheets of paper, 19 mm can tie 150 sheets of paper.