Size: A5 length 22cm/8.66in, number of holes 20, Inner height 20mm/0.78, bottom width 18mm/0.70in B5 length 26.8cm/10.55in, number of holes 26, Inner height 20mm/0.78in, bottom width 18mm/0.70in A4 length 30.7cm/12.08in, number of holes 30, Innerheight 20mm0.78/in, bottom width 17mm/0.70in Color: As shown in the figure Product features: 1. Multi-functional design: Suitable for A4, B5, and A5 size folders, meeting different needs. 2. High-quality materials: Made of premium materials, It is sturdy, does not deform after long-term use. 3. Convenient to carry: Portable design, easy to carry and store, allowing you to record important information anytime, anywhere. 4. Large capacity: O-shaped multi-hole metal loose-leaf binder design, can bind a large number of papers, making file organization more convenient. 5. Office essential: An indispensable accessory for office supplies, making work more efficient and tidy. Package includes: 1 pc Perforated Binder