Ergo Chef 1071 Santoku with Hollow Grounds, 7'' Fully Forged High Carbon German Stainless Steel (X50CrMoV15) Patented Ergonomic Design provides a Natural Extension Of Your Hand Promoting More Efficient Cuts with ease of use. The Edge Is Precision ground On An 18 Degree Angle Per Side For Precise Cuts Blades Are Precision Heat Treated To 57 RC For Extended Edge Life Full tang for strength and perfect balance Lifetime Warranty