... call permanent magnet; strong magnet, neodymium iron boron magnet , use for motor, generator, Feel free to send us enquiry ! "contact us" info ... !With various type of Size and shape,use for neodymium magnet motor, or for tyoys , etcShaped: Ring, Round Rectangle or any other ... ~11.710.3~11.0≥25≥31~33180 magnet use for generator