On the back of each magnet is 3M glue and film to keep it from drying before use

and when we say that the strength is 160 grams per cm2

Total højde: 15

With a strength of 2

Pottemagnet m. udvendigt gevind, Ø16 mm. knivskinne On the back of eachThis type of magnet is strong and has M4 external threads. The construction of a pot magnet consists of a reinforced neodymium magnet with a steel pot protective sleeve. The steel pot around the magnet acts as a conduit that reinforces the magnetism. This type of magnet offers you the options of either screwing the magnet directly onto your surface point like a screw, or you can secure it with a locknut. Be advised, two pot magnets cannot be used