Diameter Ø : 20
BS7309, 9254600000, 9254601210, 9254601200, 0154204718, 1505439
BZ6425, I76463, I764631, I764631AT, 1B43151, BZ6422, I69689, 81504106188, 81504106133
K2B0522X50, 9254321170, 9254922090, 9254922210, 10571793, 1446061, 1731943
BS3404, BS3417, 4235050000, 4235050010, 81511016378, 1932639, 0203277400