About Masanobu VG-10 Masanobu knives are made out of a VG-10 cobalt stain resistant steel blade and a pressed wood handle with a metal bolster to provide exceptionally balanced weight. This line was developed by combining traditional Japanese knife aesthetics with state of the art computerized laser processing technology. The VG-10 cobalt blade is one of the highest quality steels used in knife production, and has an excellent edge retention. Purpose of Gyuto The Gyuto is a versatile chef's knife. It can be used for cutting meat, fish and vegetables, making it suitable for preparing Western cuisine. Lightweight and thin, Japanese chef knives have a sharper blade and maintain their sharpness longer than most other chef knives.