Musashi - 1060 Carbon Steel - Clay Tempered Samurai Sword Detailed Specs of the Katana: Blade: The blade of the sword has been constructed from differentially hardened 1060 carbon steel. The hamon has been authentically created using the traditional method of forging. The blade is very well balanced and comes full tang with a very sharp edge. Saya: The saya has been constructed from wood with a black high gloss finish. The sageo is black cotton. Tsuka: The tsuba has been constructed from alloy with a scene of ronin. The fuchigashira feature a wave theme. The ito features alternating crossovers wrapped on top of real ray skin samegawa. Two bamboo mekugi secure the tang of the sword into the tsuka core.