High performance samurai sword nigger spring steel forging, 90 degree bending straight back without deformation, hardness up to 60 degrees, cutting iron without cutting edge, easy to cut bamboo and wood through mineral water bottle, etc.: Longquan ancient technology, 24 manual grinding, knife body baking black lightning technology, manganese steel blade, pure copper blade clip, total length 103 cm, body length 71 cm, handle length 26 cm, width 3.2 cm, thickness 0.7 cm, sheath: solid wood head carving Black lacquer sheath with high-end brocade box,