All of our magnets are super strong.
The following movie shows the strength of our magnets .
The small magnet diameter is 12mm, 3mm thick, can hold a knife of 70 gram,
although in the following movie the black knife is 27 gram.
The big magnet diameter is 28mm, 5mm thick, can hold a knife of 370 g,
plus a pliers of 460 g, that is the big one totally hold 830 g.
In this movie, two hanging pencils show they are all in vertical condition