R04200 -Momo 1, Reactor grade niobium korekore;
R04210 -Momo 2, Koeke hokohoko niobium korekore;
R04251 -Momo 3, Reactor grade niobium alloy kei roto 1% zirconium;
R04261 -Momo 4, Koreutu hokohoko niobium koranu kei roto 1% zirconium;