This is a conger eel boning knife from Sakai. It cuts very well. Measurements are approximately as follows: Blade length: 330mm from the machi (heel) Spine thickness: 6.8mm at the base of the blade Weight: 517g Blade material: Yasugi Steel, Shiro-ni (White Steel No. 2) Retail price: 94,380 yen Please check the photos for the current condition. This is a used item. Please consider this before purchasing if you are concerned about the condition. Immediate purchase is OK. Thank you.