NautisSalt's forged German stainless steel Iki-jime tool is to kill a fish correctly and prepare fish to keep fish meat fresh longer, for more fresh Sashimi and Sushi later. Made to reach the central nerve of the fish brain easily, and to effectively destroy it for a quick kill. By destroying central nerve system, the fish will no longer move, keeping the meat fresh. On a rocky boat in the high seas, Iki-jime tools do the job with much less danger than knives. This kind of tool is used by professional fishermen in Japan, and fish treated so is sold for 50% or more for its better taste. The Tool is made of high quality stainless steel and black aluminum and it has a polished razor sharp hardened point. Hand crafted in the USA. Rustproof