This is a 6 inch nagasa tanto. The steel is sanmai with 1095 for the shingane core and folded cable for the kawagane jackets. Differentially heat treated in water. Gentle notare hamon. The saya is made of poplar wood, lacquered red with horn fittings. The tsuka has a specially big knotted samegawa. The menuki are copper and were raised from flat sheet using the uchidashi technique then patinated in rokusho with the niage technique. Horn fuchi and kashira.