The Blade Is In Carbon Steel With Chromium Coating On The Surface Which Gives Greater Smoothness. Sharp And Then Impact Hardened Teeth Require No Further Sharpening. The Handle Is Designed To Maximize The User. Made In Japan. Blade Length 180 Mm. Spare Parts: R340320 Blade 150 Mm, R340321 Blade 180 Mm, R340322 Hook Locking Blade, R340323 Screw Kit, Data, Elastic Plug