This is a radial multi-pole magnetized circular ferrite, provided by courage magnet manufacturers, magnetic ring has 12 magnetic poles, 6 n poles, 6 S poles, sintered ferrite material, magnetic ring outer diameter size 24mm, inner hole 16mm, height (thickness) 5mm, surface magnetic strength about 900 Gauss, If you are interested in this multipole ferrite ring sample size can contact customer service for your quotation, provide samples, etc.
Multipole 12-pole Ferrite ring magnet 24 x 16 x 5 mm sample image;