About Masanobu VG-10 Damascus 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. Masanobu Damascus knives are laser printed to have a Japanese damascus look and without sacrificing sharpness. Purpose of Petty The petty is a convenient size for delicate work, cutting or peeling small vegetables, fruits and herbs.