These products are mainly used for GPS Antenna Magnetic Amount

Pot Magnet Used: Round Base Magnet with Rubber Coated
OD 3.47 Inch, Cup height 0.326 Inch, Thread M6
It's a heavy duty magnetic mount that is ideally suited for permanent installation applications. The magnets are covered with a rubber material to reduce the chance of damaging the vehicle surface.

Product Feature
● Temporary Installations.
● Fast/Easy attachment to magnetic friendly surfaces.