Cold Steel Kobun Knife With Sheath 17TZ The Kobun features Cold Steels iconic reinforced American Tanto point, making it highly resistant to bending or breaking because it is reinforced by the full thickness of the blades spine (which runs almost to the very tip of the blade). Despite its thin profile, the Kobuns deeply checkered Kray-Ex handle is designed to offer maximum grip and is contoured to resist turning or shifting in the hand. The Cold Steel Kobun is a lightweight knife that takes its name from the Japanese underworld, where the word Kobun is sometimes used as an indicator of rank that suggests the word soldier, or one who takes orders from his Oyabun or boss.