Neodymium Disc - 22mm x 15mm (N42) They are also often used

They are also often used as fasteners in a range of fabrications

5 81 132 AMFYPD60 60 14 8 30 15 113 270 AMFYPD75 75 16 10 34 18 164 552

Ferrite or Ceramic Rings are affordable

This Nickel coated Neodymium Block magnet has a Countersunk fixing hole allowing the use of a self-tapping screw to apply it to the desired non-magnetic surface and attract any metal object passing through its field

Neodymium Disc - 22mm x 15mm (N42) They are also often usedMagnetic Product Description: This rare earth disc has a diameter of 22mm and a height of 15mm. It is identified by the AMF magnets part number 20010A. Uses for our rare earth disc magnets: The Disc shape has inherent benefits in that while retaining very strong holding power, the top and bottom pole surfaces can be dislodged when sheer force is applied. Removal of the magnet can be repeated by breaking the adhesive bond with a simple sideways motion