These 3" cylindrical magnets by Eisco are made of Alnico and are highly resistant to loss of magnetism. The pairs are supplied in a cardboard box with a spacer and keepers. The blue and red split paint indicates poles.
These 3" cylindrical magnets by Eisco are made of Alnico and are highly resistant to loss of magnetism. The pairs are supplied in a cardboard box with a spacer and keepers. The blue and red split paint indicates poles.