GLOBAL CROMOVA 18 SANSO SAI KNIVES 

The blades are crafted from special CROMOVA 18 SANSO material, comprising three layers of the highest quality Stainless Steel. The central layer, with cutting edge, is of CROMOVA 18 Stainless Steel, hardened to a specific quality standard, Rockwell 58-59 degrees and honed to a fine edge to give excellent cutting performance. This cutting edge is sandwiched between two layers of a slightly softer (SUS410) Stainless Steel material, which helps to protect the blade edge against chipping, rusting and staining.