The Kikuichi Ice Hardened Molybdenum knife line offers superior performance at a reasonable price. Molybdenum in steel increases wear resistance, prevents brittleness, chipping and improves resistance to corrosion. Ice hardening in liquid nitrogen adds significantly to blade hardness, making the steel similar to the more expensive VG-10 steel in hardness. The ice hardening process also maximizes no-stain properties. These knives all are machine forged, hand-buffed, hand-stamped and hand dimpled. The dimpling reduces food sticking to the blades during slicing and chopping. Because of all the hand work, each Kikuichi Ice Hardened knife is unique! All have a lifetime guarantee.