Product details of 10 Pcs. D12mm x 3mm Y30 FERRITE CERAMIC Round Button Disc Magnets Black Magnets Two Sides Magnetized for School Physics, Science, Projects, Conveyor, Refrigerator Fridge Magnets, Levitation and Tooling Applications
Ferrite magnets are sintered permanent magnets composed of Barium or Strontium Ferrite. This class of magnets, aside from good resistance to demagnetization, has the popular advantage of low cost.