Ring magnets can be magnetized in different ways. The most common way is through the thickness and most of these are magnetized that way. I can also request an shape neodymium ring magnet to be magnetized through the diameter. Neodymium cannot be magnetized radially - with a pole on the outside edge and the opposite pole on the inside edge. Alnico is the material that can be magnetized this way. However, if you really need neodymium ring magnets to have a radial magnetization pattern we can make them in arc segments that you can put together.