Diameter Ø : 16
BS9504, 9254610100, 9254610110, 0154209718, 1935462, 20466070, 7421401943
9253241010, 0084208518, 0084209218, 0074206018, 0094209618, 7302881
O 302
4231069000, 0004207524, 81511016115, 6212188, 6212188, 1010154, 1738480, 834483