The samples show is 13.5mm OD, 10mm hole, 4mm thickness of each isotropic ferrite ring, if your company needs to buy each isotropic or anisotropic ceramic ferrite ring in large quantities, welcome to contact us, we have a lot of specifications to choose from, whether it's ordinary magnetization or multi-pole magnetization can be, looking forward to your inquiries.
13.5mm Isotropic ferrite ring with a 10mm center hole.
Magnetic rings of the same OD;