This product belongs to the 20mm ring magnet series, the material is sintered permanent magnet ferrite, the outer diameter size is 20mm, the middle hole is 10mm, the thickness is 3mm, can be ordinary or multi-pole magnetization, the picture shows four poles of magnetization, there are spot can be fast delivery, if you need this size, we can give you a preferential price,
20mm ring ferrite magnets are widely used in electronics, sensors, and electrical engineering, with more than 40,000 in stock, For more specifications, please search in the website or contact customer service.