Zhitian xinchangbushi Dao is made of high manganese steel. It is forged and baked black. The double line edge is ground by hand. It is fixed with iron Tan and copper cluster binocular nails. It is pure hand carved lacquer. Total length 104, blade length 74, blade width 3.1, blade thickness 0.7, total weight 1.2, demyelinating 1kg. Bending 90 degrees without deformation, quenching high hardness, cutting iron without edge