Product Name: n45 large ring neodymium magnets for audio equipments

Features:1) φ3 up to 220mm

2) Up to N52 max.3) Ni, Zn, NiCuNi, Gold, or Epoxy coated.

4) Max. Working Tempeture: 250 deg. C5) Used in audio equipment, such as Loudspeakers, earphones, microphones,etc. 

n45 large ring neodymium magnets for audio equipments