DOJO Cutlery blades are made from welding a core of high-carbon "blue steel" between two layers of stainless steel. Blue Steel is a complex steel noted for its ability to hold an exceedingly sharp, long-lasting edge. The blades are tempered to Rockwell c62º and will hold their edge considerably longer than any Western made knife. The Pakka Wood handles are made by compressing together very thin slices of wood, which have been pressure treated with plastic. This process produces a handle that is impervious to water and will last several lifetimes. For strength, the handles are riveted to the full length tang. Each blade comes razor sharp with instructions for maintaining this edge. Dojo knives have been a long time favorite at JustKnives101. Want to buy some Japanese knives that are actually used and sold IN JAPAN? Try a Dojo!