Opinel Serrated Knife No.113 (Sky Blue) Blade length 10 cm. Sandvik stainless steel We use Sandvik 12C27 modified stainless steel. It is anti-corrosive thanks to the addition of chrome and requires no special maintenance. Its carbon content of at least 0.40% gives excellent cutting edge. Handle Coming from French forests, this white wood with few veins is ideal for applying color. The handle is varnished to be protected against moisture and dirt.