Samurai Sword Maintenance Kit The proper care and maintenance of swords is critical if they are to retain their condition. The composition of sword steel makes it very susceptible to rust. The cleaning kit we offer has everything necessary for basic sword care. Includes:a brass hammer to easily dismantle the sword a bottle of choji oil, to prevent rusting and rice paper to apply it with, a clean erufu, and a extra large uchiko the uchiko pad contains non-abrasive powder that absorbs extra cleaning oil This cleaning kit comes in an attractive carved wooden box and is a necessity for any sword collector.