FIRST4MAGNETS Ferrite Pot Magnet with M10 External Thread for Arts, Crafts, Model Making, DIY, Hobbies and Holding - 80mm dia x 18mm thick 57kg Pull - Pack of 4

Outstanding value for money, these ferrite pot magnets are made of a ferrite magnet sunken in to a steel shell meaning that the north pole is on the centre of the magnetic face and the south pole is on the outer edge around it.Suitable for use with a tapped hole, a countersunk hole or with a threaded stud for convenient mounting.The steel pot increases the adhesive force of the magnets giving them a strong hold for their size. An added advantage of pot magnets is that they are resistant to chipping or cracking following constant impact with a steel surface.