18mm ring magnet

Multipole magnetized sintered ferrite ring 18 x 7.8 x 9 mm

Whether it is a ferrite magnet round, square, or ring, it can be multi-pole magnetized. The magnet you see now has an outer diameter of 18mm, an inner diameter of 7.8mm, and a thickness of 9mm. The commonly used number of magnetization poles is 8....