Specifications ferrite magnet is cheap, including sintered ferrite magnet and bonded ferrite magnet, injection ferrite, rubber magnet. Ferrite magnet is the cheapest permanent magnet, very weaker. Sintered ferrite magnet in ring and block shape are very popular, a few customers asked us to produce bonded injection ferrite magnet ring, we usually produce ferrite magnet without coating. If you are interested in our ferrite magnets, please tell us the information below: Material: ferrite magnet Size: Various Grade: Y30, Y35, C5, C8 Magnetization direction: Through thickness Quantity: