The Hassel knife is a hidden tang knife that was a collaboration with an "apprentice" I had some years ago. He made a knife inspired by my Survival, Helle Polar and Sissipuukko M07. The idea was to have a handle with less heat conduction in arctic climate. To keep the strength as close to that of a full tang, the tang on this is 14 mm wide and 5 mm thick over its whole length that goes through most of the handle. The blade is made of A8-mod hardened to 60 HRC, and is 11 cm long, 5 mm thick.