I.O.Shen mastergrade knives feature triplex technology. The harder the steel the better a knife is at retaining its razor sharp edge, but harder steel can be brittle. The I.O.Shen Corporation of Japan have solved the problem by wrapping two reinforcing layers of softer, shock-absorbing Rockwell 10° steel around a single core of ultrasharp Rockwell 62° steel.
It is important to note that the Tai Tang design on the handle is not just an embellishment, it is actually forms an integral part of the frame, the Tang. This improves balance and stability and distinguishes I O Shen from any other knife