This is a B5, 26-hole binder. 【Specifications】 Size: 215 x 280 x 25 mm Metal fittings: Inner diameter 19 mm, medium size (made in Japan), holds 100 sheets Cowhide leather, one piece, thickness approx. 1.5 mm Color: Dark brown, a sense of weight. Uses high-quality leather. This binder is made using a single piece of cowhide leather. The leather has a firm, resilient feel. The more you use it, the more character it will develop. #Memo #Information #Organization Made by Daichiro Uematsu Workshop We also make Paracare series planners. Please refer to them. Type of notebook/memo pad: Loose-leaf, plain Paper size: B5 (no description)