This ring magnet has a super small size, the material is sintering neodymium, the specific size is 6.5mm in diameter, 0.7mm in thickness. The ultra small magnet is our company's advantage, we can reach 0.4mm size and the tolerance we can control in ±0.03mm. The surface is black epoxy coating and the direction of magnetizing is axial(also called thickness). It mainly used in precision equipment, sensors, instruments, motor and other fields.
The measurement of miniature ndfeb ring magnet 6.5mm x 0.7mm: