This is a 5mm thick countersunk hole ring magnet, the material is rare earth neodymium. The specific is 18mm in outer diameter, 4.3mm in inner diameter, 5mm in thickness. The countersunk hole magnet generally is neodymium magnet, the ferrite magnet is not suitable to process countersunk hole. If you need to work at a high temperature, you can choose samarium cobalt magnet. This magnet is a custom magnet, so we have less spot sale, if you need the magnet of same specification, and you need a lot of quantity, we may be need more 3-5 days to product.
Our magnet manufaturer can custom magnet according to your requirment, and we have strict tolerance control, high quality, strong power, stable performance and great material. If you have any demand about magnet, please contact us！