Karesuando Kniven Heinno 4040 The handle is of heat-treated masur birch, reindeer antler and brass. The blade is made out of stainless steel, Sandvik 12C27, hardened to 57 HRC. The sheath is made of cowhide, braided without glue or sewing thread. Internal cut protection. Care: Rub in handle with beeswax or cookingoil from time to time. Make the blade and the brass shiny again with metal polishing-paste • 7.63″ overall. • 3.25″ mirror finish 12C27 Sandvik stainless drop point blade.