BIALFA COBALT M42 13 X 0.5 X 18 1900
BIALFA COBALT M42 13 X 0.6 X 18 1900
BIALFA COBALT M42 13 X 0.6 X 18 1940
BIALFA COBALT M42 13 X 0.6 X 18 1970