This is a B5, 26-hole binder. [Specifications] Size: 210 x 280 x 30 mm Metal fittings: Inner diameter 19 mm, medium size (made in Japan) Made entirely of cowhide leather. Color: Dark brown, glossy, with a substantial feel. Uses high-quality genuine leather, a single piece of leather, slightly thick, simple, and will feel sturdy for a long time. The more you use it, the more character it will develop. Use this for meetings, studying, research, organizing information, and writing papers. Note: Writing instruments are not for sale. #Memo #Information #Organization Made by Daichiro Uematsu Workshop We also create Paracare series notebooks. Please refer to them. Type of notebook/memo pad: Loose-leaf Paper size: B5