Product Review

1) Diameter is 30mm(1.18"),thickness is 5mm(0.196")
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.