Size: A5 length 22cm or 8.66in, number of holes 20, Inner height 20mm or 0.78, bottom width 18mm or 0.70in B5 length 26.8cm or 10.55in, number of holes 26, Inner height 20mm or 0.78in, bottom width 18mm or 0.70in A4 length 30.7cm or 12.08in, number of holes 30, Innerheight 20mm0.78 or in, bottom width 17mm or 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