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 Santoku The santoku, meaning "three virtues", is an all-purpose knife that takes its name from its ability to easily handle meat, fish and vegetables. The high profile of the blade makes the santoku well-suited for smaller kitchen spaces and keeps the knuckles well above the cutting board.