Fire Forged 7" Santoku Knife Made from the finest high-carbon stainless steel from Solingen, Germany: Grade 4116. Each knife is precision forged using traditional Hot-Drop Forge which results in a harder, sharper blade that is corrosion resistant and highly elastic. Hardened and tempered to the perfect 58 Rockwell. Full tang blades with triple riveted handles for the perfect balance and weight. A curved and recessed bolster provides a seamless transition from handle to blade and supports the thumb for better balance and safety.