1. Uses: DIY notebooks, homemade test paper holders, file folders, etc.
2. The standard hole distance is 9.5mm
3. Frosted material, safe and odorless
4. Rounded corner design, not hurting hands
5. High quality PP, good toughness
6. Waterproof and dirt-resistant, protect documents
7. A4 30 holes, 214x299mm; B5 26 holes, 183x263mm; A5 20 holes, 210x150mm
8. Specification: 2pcs/set