Helle Hellefisk Knife - Lightweight Fishing Knife Hellefisk is a straight-forward fishing knife with a cork handle. The stainless blade of Sandvik 12C27 steel is thin and rather stiff. The traditional sheath hangs from a thong. The Hellefisk knife weighs less than 2 ounces and it floats if it is lost overboard. Technical Specifications of the Helle Hellefisk: Made in Norway Weight | 2.2 oz. / 64 g. Blade material | Triple laminated stainless steel. Blade thickness | .05 in / 1.3 mm. Blade length | 4.8 in / 123 mm. Handle material | Cork. Handle length | 5.1 in / 130 mm. Sheath material | Genuine leather. Design By | Tor Indergaard, 1992.