This is a rare vintage Kanetsune Survival knife, made in Seki, Japan circa 1980s. North Man is a brand of Kanetsune which continues to produce quality cutlery in Seki. The name is rather humorous, "Substance Rumbo Knife" with obvious inspiration coming from the Rambo knife designed by Lile and apparently originally intended for sale in Japan. The blade is 8" stainless steel and the handle is hollow aluminum. Measures 13.25 long overall. Comes with all pictured items with the original sheath and box.