Donut Magnets 

LARGE (70mm diameter): $15
For use in Muscle Testing

SMALL (32mm Diameter) $6
For use in corrections

Both magnets are marked with the North Pole on one side (hence the South Pole is the other side), but such that the magnet becomes a mini earth magnet (so it is not marked as a pole seeking magnet). Instructions on this come with the magnet.

If you order these magnets with test kits or essences they may be sent separately in a different parcel.