SAYAKA 3 Layers Blade The core material is VG10 super stainless steel, which is clad by high quality stainless steel from both sides. The KATANA sword wave line is clearly observed on the blade. Of course the blade has an extremely sharp cutting angle and long cutting performance. Handle The handle is made out of high quality 18-10 stainless steel, SAYAKA handle has very unique zebra stripes for a firm grip. Grip-end shows a nicely etched Yaxell logo.