Kiya Nihonbashi Katsuobushi Bonito Shaver Box Made in Japan Hitachi Yasugi Aogami Blue Steel #1.

Paulownia wood

Yasugi Blue Paper/Aogami #1 (Blue steel).

Yasugi steel is a type of High Carbon Steel that reduces impurities (such as phosphorus (P) and sulfur (S)) to the extreme to reach the hardness required to achieve maximum sharpness. Its characteristics and performance change depending on its ingredients and contents. The type of steel is indistinguishable by the naked eye, so colored paper is used to differentiate them. These are Yellow Paper/Kigami, White Paper/Shirogami (White steel), and Blue Paper/Aogami (Blue steel). Yasugi Blue Steel is particularly superior, it’s hard to rust and is extremely sturdy and tenacious. Sharpening it also restores its sharpness.

https://kiya-hamono.jp/products/0800040000

315×135×155mm