KATSU CK01, Carbon Fiber Handle & 154CM Steel Blade, Leather SheathKATSU CK01, Carbon Fiber Handle & 154CM Steel Blade, Leather Sheath Features Solid carbon fiber handle offers comfortable grip and lightweight experience 3. 5 inch 154CM steel blade, which has excellent strength, edge retention and corrosion resistance Japanese Style Thumb Opening Lever gives user the ability to open the knife with one hand fast and smoothly Japanese traditional convex grind (Hamaguri ba) finished blade shows amazing toughness and