Kiritsuke Gyuto is a cross between traditional kiritsuke and gyuto. The profile of the cutting edge is generally straighter and the tip is cut, similar to the kiritsuke, while the double bevel is characteristic of the gyuto. Kiritsuke Gyuto acts as a chef's knife in your kitchen and can do most of the tasks. It is usually found between 210 and 270 mm.
Shirogami #1 by Hitachi steel co translates to white steel #1 and is an improved version of Shirogami #2 as it contains a higher carbon content. It is named after the color of the paper in which it is packaged once produced. It is considered one of the purest steels, after Tamahagane, which allows for a sharper edge than most other steels. However, it will generally be more brittle and can break more easily due to misuse. Mastering the forging of shirogami #1 to exploit its full potential is not simple and requires an expertise that few blacksmiths have. It is in the process of making a Mizu Honyaki type knife that you will find the shirogami #1 in its most difficult to forge version, but also the sharpest.