Radial ferrite magnet

What is radial ferrite magnet? Which kinds are there?

Radial ferrite magnet, a kind of ferrite magnet with radial magnetization method, mainly radially charged, belongs to permanent magnet type, has good high temperature resistance, the strong magnetic surface is on the outer side of the magnet, and has a solid heel. There are 2 types of hollow rings. The radial ferrite magnets currently on the market are basically ring-shaped, with 2, 4, and 8 poles. ....