1) Diameter is 30mm(1.18″),thickness is 5mm(0.196″) and 18mm(0.71″),thickness is 4mm(0.157″)
2) it is Ferrite Magnets,not strong magnets
3) it is Grade 5.
4) it is highly stablility udner difficultal environment.
5) notice:It is only for science,craft and production use,Not toys.
6) 30 days Unconditional refund.
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it is Ferrite Magnets,not strong magnets,Grade 5,
It is highly stablility udner difficultal environment
notice:It is only for science,craft and production use,Not toys.
30 days Unconditional refund.
