The knife deba by Kanetsune Seki with a blade length of 10.5cm, is designed for the cutting and filleting of whole fish without damaging their flesh. It can also be used for cutting chicken or meat, but they have small bones. It has a medium-sized blade with a slightly curved edge. It is made of stainless steel, a popular material for knives, it is particularly durable and does not corrode. It is a combination of carbon and iron as a base, and chromium is added to repel stains and give the blade a glossy finish.