The core of the knife consists of an ultra-fine layer of high-alloy »Double X VG 12« carbon steel, with an extreme hardness of more than 61° HRC. This makes it exceptionally effective in cutting and prolongs the service life of the edge considerably. This core is embedded in food-safe stainless steel, using a sandwich technique. Plumwood Handle. All Dick 1778 series knives are sharpened and polished by hand.