Ace Martial Arts Supply Japanese Samurai Katana Sword Maintenance Cleaning Kit Model: 231-2 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. This cleaning kit comes in an attractive carved wooden box and is a necessity for any sword collector. The cleaning kit we offer has everything necessary for basic sword care. Includes:a brass awl and hammer to easily dismantle the sworda bottle of choji oil, to prevent rusting and rice paper to apply it witha plastic container to store an oiled clothan extra large uchiko, the pad contains non-abrasive powder that absorbs extra cleaning oil