The sample shows a very small ferrite ring magnet, of various grades, with an outer diameter of 5.7mm, a small hole of 2.2mm, and a thickness of 1.8mm, mainly used in quartz watches.
Picture of radial 2-pole small magnet ring size, next to the 10 cents RMB.
Please leave us a message if you need different sizes of ferrite small ring magnets.
select more mini ring magnets: https://www.couragemagnet.com/tiny-ring-magnets/