Thinking of listing some Black Cylindrical Magnets (73092) but notice that royal mail prohibitions says-
"Magnetized material (with a field strength of 0.418A/metre or more at a distance of 4.6 metres from the outside of the package"
Not being very scientificaly minded,how powerful are those magnets and have any sellers had experience with them?
Comments
If you have a compass you can test it.