1. Pot magnets, also called Cup Magnets, Magnetic Holders or Magnet Hooks, are made of permanent magnet encased in a metal pot, and feature a hole, thread, boss or removable hook in centre of the magnets. The pot is an essential part of the magnetic circuit. the active magnet face is not enclosed. When Pot magnets hold any metal parts, the magnetic force in this circuit is stronger than that of alone magnet. It is the most efficient design for gripping, also provide an easy, non-destructive way to suspend objects or attach them to metal.
2. Material: Outside is Fe, inside is magnet.
Magnet can be: NdFeB, Alnico, SmCo, Ferrite.
Surface can be Zn, Ni, Cr, Epoxy, painting, Rubber cover etc.
Hanging signs and lights
Making retrieval tools
Holding through non-ferrous materials
Use for fastening or holding steel doors
Insertion into molds
Insertion into fixtures
For car roof signs.