These magnets are made from lightweight barium and iron oxides and
differ from materials commonly used to make permanent magnets. It has 
a high resistance to demagnetization (no keepers are needed), ageing 
effects are negligible and has a high electrical resistivity. 
These magnets magnetize best across thin sections instead of in the 
conventional long dimension. They are magnetized parallel to the axis 
with NORTH on one face and SOUTH on the other.


  

    

    Code
    

    Shape
  
  

    

    01
    
 Disc 
    with hole
  
  

    

    02
    
 Disc
  
  

    

    03
    
 Block
  
  

    

    04
    
 Bar