This is a threaded type magnet with knurled surface, made of steel shell and high temperature resistant SH grade round magnet, the thread is in the center, belongs to the inner threaded flat magnet, the outer diameter is 25mm, the height is 8mm, the magnet is wrapped by the A3 steel which can prevent the magnet from being broken, prolonging the service life, if you need to buy this type of magnet you can contact us and tell us the specification you want.
25x8mm strong magnet with inner threaded hole physical sample picture
Other sizes of neodymium magnets with internal threads;