[product name]: high quality pure copper high performance manganese steel "exclusive xiadiyan, Jinglei pattern" manual push grinding dagger "disaster snake" samurai sword has existed as a weapon since ancient times [blade material]: high performance manganese steel is forged by hand, roasted blue, and the blade adopts exclusive pure manual "xiadiyan, Jinglei pattern" [fitting]: pure copper set "thickening" exclusive carving arrowhead [sheath material]: solid wood painted sheath "exclusive boutique" [suitable]: collection of self-defense lovers, delivery of housewarming gifts, exquisite martial arts fitness furnishings [performance]: high sharpness, easy sweeping and drainage, hardness as high as 60 degrees, cutting iron without pressure, bamboo like cutting vegetables Toughness can be bent 90 degrees to straighten... [process]: the blade is handmade by dozens of ancient Longquan methods, such as forging, hot forging, shoveling, filing, grinding, heat treatment (quenching), tempering, primary repair, finishing, etc